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1172C59

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1172C59
May 12, 2026

1172C59

1. Product Overview The 1172C59 is an industrial-grade hybrid input and output module designed for industrial automation and process control systems. It integrates analog input, analog output, digital input and digital output functions into one compact DIN rail mounted unit. With built-in isolation circuit and multi-protection design, the module features high-precision signal conversion, strong anti-interference performance and wide temperature adaptability. It supports standard industrial 4~20mA and 0~10V analog signals, adopts RS485 communication interface and Modbus RTU protocol. It is widely applied in mechanical automation, water treatment, HVAC, energy monitoring and factory automatic control systems.

Description

1. Product Overview

1. Product Overview

The 1172C59 is an industrial-grade hybrid input and output module designed for industrial automation and process control systems. It integrates analog input, analog output, digital input and digital output functions into one compact DIN rail mounted unit.
With built-in isolation circuit and multi-protection design, the module features high-precision signal conversion, strong anti-interference performance and wide temperature adaptability. It supports standard industrial 4~20mA and 0~10V analog signals, adopts RS485 communication interface and Modbus RTU protocol. It is widely applied in mechanical automation, water treatment, HVAC, energy monitoring and factory automatic control systems.

2. Main Features

  • Integrated hybrid I/O design, compatible with common industrial analog and digital signals

  • 16-bit high precision resolution for all analog input and output channels

  • Full software configuration for signal type, engineering range and working parameters

  • Built-in isolation, overvoltage, overcurrent, short-circuit and over-temperature protection

  • RS485 communication interface, supports standard Modbus RTU communication protocol

  • Wide operating temperature range, suitable for harsh industrial field environments

  • Digital channels support NPN/PNP logic selection and adjustable debounce time

  • Analog channels support digital filtering and configurable fail-safe mode under communication loss

  • Flame-retardant engineering plastic housing, compact size, low power consumption

  • High stability and reliability for long-term continuous industrial operation

3. Technical Specifications

3.1 General Parameters

Model: 1172C59
Rated Power Supply: 24VDC ±10%
Maximum Working Current: 290mA
Isolation Voltage: 1500VDC isolation between field side and internal circuit
Operating Temperature: -25℃ ~ +60℃
Storage Temperature: -40℃ ~ +85℃
Relative Humidity: 5% ~ 95% RH, non-condensing
Mounting Type: Standard 35mm DIN rail
Housing Material: Industrial flame-retardant plastic

3.2 Channel Configuration

Analog Input: 4 channels, 4~20mA / 0~10V software selectable
Analog Output: 2 channels, 4~20mA / 0~10V software selectable
Digital Input: 8 channels, 24VDC level compatible
Digital Output: 4 channels, single channel rated load 0.5A

3.3 Analog Performance

Resolution: 16-bit
Basic Accuracy: ±0.1% Full Scale at room temperature
Temperature Drift: ±0.2% Full Scale over full temperature range
Analog Input Load: Current type ≤250Ω; Voltage type ≥100kΩ
Analog Output Load: Current type ≤500Ω; Voltage type ≥1kΩ

3.4 Communication Parameters

Communication Interface: RS485
Protocol: Modbus RTU
Default Baud Rate: 9600bps
Data Format: 8 data bits, 1 stop bit, no parity
Device Address: 1~247 configurable

4. Safety Precautions

  • Installation, wiring and maintenance must be performed by qualified professional technicians.

  • Disconnect all power supply before wiring, disassembly or maintenance to avoid electric shock and equipment damage.

  • Do not install the module in environments with flammable gas, explosive dust, corrosive vapor or conductive particles.

  • Keep sufficient ventilation space around the module and do not block heat dissipation gaps.

  • Separate signal cables and power cables during wiring to reduce electromagnetic interference.

  • The protective grounding terminal must be connected to reliable earth ground.

  • Do not exceed the rated load of each input and output channel to avoid permanent damage.

  • Do not disassemble or modify the internal structure of the module without authorization.

5. Installation and Terminal Definition

5.1 DIN Rail Installation

  1. Fix the standard 35mm DIN rail firmly on the mounting surface.

  2. Align the upper buckle of the module with the DIN rail edge.

  3. Press the module downward until the bottom lock snaps into place.

  4. Slightly shake the module to confirm firm installation without sliding.

5.2 Terminal Pin Assignment

1     24VDC Power Positive
2     24VDC Power Negative
3     Analog Input 1+
4     Analog Input 1-
5     Analog Input 2+
6     Analog Input 2-
7     Analog Input 3+
8     Analog Input 3-
9     Analog Input 4+
10    Analog Input 4-
11    Analog Output 1+
12    Analog Output 1-
13    Analog Output 2+
14    Analog Output 2-
15    Digital Input Common
16    Digital Input Channel 1
17    Digital Input Channel 2
18    Digital Input Channel 3
19    Digital Input Channel 4
20    Digital Input Channel 5
21    Digital Input Channel 6
22    Digital Input Channel 7
23    Digital Input Channel 8
24    Digital Output Channel 1
25    Digital Output Channel 2
26    Digital Output Channel 3
27    Digital Output Channel 4
28    Digital Output Common
29    Protective Ground

5.3 Wiring Instructions

  1. Strip about 6mm insulation from wire ends.

  2. Loosen terminal screws with a standard screwdriver.

  3. Insert wires into corresponding terminals strictly according to pin definition.

  4. Tighten screws moderately to ensure reliable contact, avoid over-tightening.

  5. Fix cables with cable ties to prevent pulling stress on terminals.

  6. Analog signal uses shielded twisted-pair cable with single-end shielding grounding.

  7. Digital signal adopts stranded copper wire with suitable wire gauge.

6. Parameter Configuration

6.1 Connection Method

Connect the module RS485 interface to PC via USB-to-RS485 adapter, use dedicated configuration software to scan and connect the device.

6.2 Configurable Parameters

Analog Input

Signal type: 4~20mA / 0~10V optional
Custom engineering range setting
Digital filter enable and frequency adjustment

Analog Output

Signal type: 4~20mA / 0~10V optional
Output range calibration
Fail-safe mode: fixed value or hold last value when communication fails

Digital Input

Input logic mode configuration
Debounce time: 0~500ms adjustable

Digital Output

Output logic mode selection
Fail-safe state: ON / OFF when communication lost
Pulse output mode and pulse width setting

Communication Settings

Baud rate optional: 9600 / 19200 / 38400bps
Modbus station address configurable
Support restore factory default parameters

6.3 Save and Activation

After parameter setup, save configuration to the module. Power cycle the module to make all parameters take effect.

7. Operation Description

7.1 Power-on Self-test

After 24VDC power is supplied, the power indicator lights up. The module completes internal self-diagnosis within 2 seconds and enters normal operation if no fault is detected.

7.2 Working Mode

  • Analog Input: Collect field sensor analog signals, convert into digital data and upload to control system in real time.

  • Analog Output: Receive control commands and convert into standard analog signals to regulate valves and actuators.

  • Digital Input: Detect switch and sensor on-off status, upload signal changes in real time.

  • Digital Output: Control external relays, solenoid valves and indicators to switch on and off.

  • Communication: Realize data interaction and parameter configuration with upper controller via Modbus RTU.

7.3 Indicator Status

Power LED Steady Green: Power normal
Power LED Off: No power or power fault
Status LED Green Flashing: Normal operation
Status LED Red Flashing: Overload, short circuit or communication fault
Status LED Steady Red: Hardware failure, replace module

8. Daily Maintenance

  • Regularly check indicator status and terminal tightness, inspect for oxidation and looseness.

  • Clean module surface only with dry soft cloth; do not use liquid or chemical solvents.

  • Keep operating temperature and humidity within specified range.

  • Periodically check cable aging and replace damaged wires in time.

  • Replace faulty module with the same model and reconfigure parameters.

9. Troubleshooting

  1. Power indicator off
    Cause: No 24VDC input, reverse polarity or broken wire
    Solution: Check power circuit and wiring polarity
  2. Status indicator red flashing
    Cause: Output overload, short circuit, self-test failure or communication interruption
    Solution: Disconnect field load, eliminate fault and restart power
  3. Analog input data abnormal
    Cause: Wrong signal type, loose terminal or unmatched load resistance
    Solution: Reconfigure channel type and fasten wiring
  4. Analog output inaccurate
    Cause: Improper range setting or over load resistance
    Solution: Reset range and control load within rated value
  5. Digital input no response
    Cause: Wrong logic setting or loose wiring
    Solution: Adjust input logic and check terminals
  6. Digital output no switching
    Cause: Overload current or incorrect logic
    Solution: Reduce load and reconfigure parameters
  7. RS485 communication failure
    Cause: Mismatched baud rate/address, A/B line reversed
    Solution: Unify communication parameters and correct wiring

10. Warranty Terms

This module provides limited warranty against manufacturing and material defects. Damage caused by improper installation, overload operation, unauthorized disassembly and use beyond environmental specifications is not covered by warranty.

2. Main Features

  • Integrated hybrid I/O design, compatible with common industrial analog and digital signals

  • 16-bit high precision resolution for all analog input and output channels

  • Full software configuration for signal type, engineering range and working parameters

  • Built-in isolation, overvoltage, overcurrent, short-circuit and over-temperature protection

  • RS485 communication interface, supports standard Modbus RTU communication protocol

  • Wide operating temperature range, suitable for harsh industrial field environments

  • Digital channels support NPN/PNP logic selection and adjustable debounce time

  • Analog channels support digital filtering and configurable fail-safe mode under communication loss

  • Flame-retardant engineering plastic housing, compact size, low power consumption

  • High stability and reliability for long-term continuous industrial operation

3. Technical Specifications

3.1 General Parameters

Model: 1172C59Rated Power Supply: 24VDC ±10%Maximum Working Current: 290mAIsolation Voltage: 1500VDC isolation between field side and internal circuitOperating Temperature: -25℃ ~ +60℃Storage Temperature: -40℃ ~ +85℃Relative Humidity: 5% ~ 95% RH, non-condensingMounting Type: Standard 35mm DIN railHousing Material: Industrial flame-retardant plastic

3.2 Channel Configuration

Analog Input: 4 channels, 4~20mA / 0~10V software selectableAnalog Output: 2 channels, 4~20mA / 0~10V software selectableDigital Input: 8 channels, 24VDC level compatibleDigital Output: 4 channels, single channel rated load 0.5A

3.3 Analog Performance

Resolution: 16-bitBasic Accuracy: ±0.1% Full Scale at room temperatureTemperature Drift: ±0.2% Full Scale over full temperature rangeAnalog Input Load: Current type ≤250Ω; Voltage type ≥100kΩAnalog Output Load: Current type ≤500Ω; Voltage type ≥1kΩ

3.4 Communication Parameters

Communication Interface: RS485Protocol: Modbus RTUDefault Baud Rate: 9600bpsData Format: 8 data bits, 1 stop bit, no parityDevice Address: 1~247 configurable

4. Safety Precautions

  • Installation, wiring and maintenance must be performed by qualified professional technicians.

  • Disconnect all power supply before wiring, disassembly or maintenance to avoid electric shock and equipment damage.

  • Do not install the module in environments with flammable gas, explosive dust, corrosive vapor or conductive particles.

  • Keep sufficient ventilation space around the module and do not block heat dissipation gaps.

  • Separate signal cables and power cables during wiring to reduce electromagnetic interference.

  • The protective grounding terminal must be connected to reliable earth ground.

  • Do not exceed the rated load of each input and output channel to avoid permanent damage.

  • Do not disassemble or modify the internal structure of the module without authorization.

5. Installation and Terminal Definition

5.1 DIN Rail Installation

  1. Fix the standard 35mm DIN rail firmly on the mounting surface.

  2. Align the upper buckle of the module with the DIN rail edge.

  3. Press the module downward until the bottom lock snaps into place.

  4. Slightly shake the module to confirm firm installation without sliding.

5.2 Terminal Pin Assignment

1     24VDC Power Positive2     24VDC Power Negative3     Analog Input 1+4     Analog Input 1-5     Analog Input 2+6     Analog Input 2-7     Analog Input 3+8     Analog Input 3-9     Analog Input 4+10    Analog Input 4-11    Analog Output 1+12    Analog Output 1-13    Analog Output 2+14    Analog Output 2-15    Digital Input Common16    Digital Input Channel 117    Digital Input Channel 218    Digital Input Channel 319    Digital Input Channel 420    Digital Input Channel 521    Digital Input Channel 622    Digital Input Channel 723    Digital Input Channel 824    Digital Output Channel 125    Digital Output Channel 226    Digital Output Channel 327    Digital Output Channel 428    Digital Output Common29    Protective Ground

5.3 Wiring Instructions

  1. Strip about 6mm insulation from wire ends.

  2. Loosen terminal screws with a standard screwdriver.

  3. Insert wires into corresponding terminals strictly according to pin definition.

  4. Tighten screws moderately to ensure reliable contact, avoid over-tightening.

  5. Fix cables with cable ties to prevent pulling stress on terminals.

  6. Analog signal uses shielded twisted-pair cable with single-end shielding grounding.

  7. Digital signal adopts stranded copper wire with suitable wire gauge.

6. Parameter Configuration

6.1 Connection Method

Connect the module RS485 interface to PC via USB-to-RS485 adapter, use dedicated configuration software to scan and connect the device.

6.2 Configurable Parameters

Analog Input

Signal type: 4~20mA / 0~10V optionalCustom engineering range settingDigital filter enable and frequency adjustment

Analog Output

Signal type: 4~20mA / 0~10V optionalOutput range calibrationFail-safe mode: fixed value or hold last value when communication fails

Digital Input

Input logic mode configurationDebounce time: 0~500ms adjustable

Digital Output

Output logic mode selectionFail-safe state: ON / OFF when communication lostPulse output mode and pulse width setting

Communication Settings

Baud rate optional: 9600 / 19200 / 38400bpsModbus station address configurableSupport restore factory default parameters

6.3 Save and Activation

After parameter setup, save configuration to the module. Power cycle the module to make all parameters take effect.

7. Operation Description

7.1 Power-on Self-test

After 24VDC power is supplied, the power indicator lights up. The module completes internal self-diagnosis within 2 seconds and enters normal operation if no fault is detected.

7.2 Working Mode

  • Analog Input: Collect field sensor analog signals, convert into digital data and upload to control system in real time.

  • Analog Output: Receive control commands and convert into standard analog signals to regulate valves and actuators.

  • Digital Input: Detect switch and sensor on-off status, upload signal changes in real time.

  • Digital Output: Control external relays, solenoid valves and indicators to switch on and off.

  • Communication: Realize data interaction and parameter configuration with upper controller via Modbus RTU.

7.3 Indicator Status

Power LED Steady Green: Power normalPower LED Off: No power or power faultStatus LED Green Flashing: Normal operationStatus LED Red Flashing: Overload, short circuit or communication faultStatus LED Steady Red: Hardware failure, replace module

8. Daily Maintenance

  • Regularly check indicator status and terminal tightness, inspect for oxidation and looseness.

  • Clean module surface only with dry soft cloth; do not use liquid or chemical solvents.

  • Keep operating temperature and humidity within specified range.

  • Periodically check cable aging and replace damaged wires in time.

  • Replace faulty module with the same model and reconfigure parameters.

9. Troubleshooting

  1. Power indicator offCause: No 24VDC input, reverse polarity or broken wireSolution: Check power circuit and wiring polarity
  2. Status indicator red flashingCause: Output overload, short circuit, self-test failure or communication interruptionSolution: Disconnect field load, eliminate fault and restart power
  3. Analog input data abnormalCause: Wrong signal type, loose terminal or unmatched load resistanceSolution: Reconfigure channel type and fasten wiring
  4. Analog output inaccurateCause: Improper range setting or over load resistanceSolution: Reset range and control load within rated value
  5. Digital input no responseCause: Wrong logic setting or loose wiringSolution: Adjust input logic and check terminals
  6. Digital output no switchingCause: Overload current or incorrect logicSolution: Reduce load and reconfigure parameters
  7. RS485 communication failureCause: Mismatched baud rate/address, A/B line reversedSolution: Unify communication parameters and correct wiring

10. Warranty Terms

This module provides limited warranty against manufacturing and material defects. Damage caused by improper installation, overload operation, unauthorized disassembly and use beyond environmental specifications is not covered by warranty.


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