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IC697MDL651 Wiring

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  • IC697MDL651
  • IC697MDL651 Wiring

Product Description

The GE IC697MDL651 is a 32-point discrete input module part of the Series 90-70 Programmable Controllers.  It features 32 TTL compatible input points with each input having a pullup resistor. Thus, user power is not required. The input filter selectable is 1ms or 10ms and one input is configurable as interrupt. There are LED indicators present on the top of the module, which provide information about the ON/OFF status of each point of the circuit’s logic (or PLC) side. The rated voltage of IC697MDL651 is 5 volts DC. There are 32 inputs per module with 98.4 (30m) maximum cable length. Isolation is 1500 volts. Input voltage range is between -3 and +7 volts DC. Input characteristics of the module include impedance of 5.9K ohms, ±5%; on-state voltage of -3 to 0.5 volts; off-state voltage of 2 to 7 volts; typical on-state current of 1.7mA at rated voltage and maximum off-state current of 1.1mA. The current required from 5V bus is .53 amp. In addition, the system is designed to support the VME standard C.1.

The IC697MDL651 module is mechanically keyed in order to ensure a similar type in the field can correctly replace it if needed. I/O references can be configured by the user without the need to use DIP switches or jumpers on the module.The above-mentioned mechanical key the module comes with prevents unintended substitution of the wrong module type in the same slot. The key is designed to fit an area on the board below the connector that has a unique shape.  It is important to note that in a IC697 PLC rack, the leftmost position is reserved for a power supply only. In addition, one spot located next to the power supply needs to contain a CPU or a Bus Receiver Module. The input module’s design allows it to have negative logic characteristics. This means it sinks current running from input device to the user common. IC697MDL651 is compatible with different input devices such as limit switches, pushbuttons, selector switches, BCD outputs, counters as well as other TTL compatible outputs.

To configure the device, use the configuration function of Windows or MS-DOS software running on Windows NT or Windows 95 through the SNP port or over Ethernet TCP/IP.  IC697MDL651 is configurable to have 1 ms or 10 ms filter delay time. Configuration is not a per point basis but rather on a module basis, which means that all points have the same filter time. Whenever the IC697MDL651 is used with IC697 CPU, input point A1 can be configured so to cause a CPU interruption either on the falling or the rising edge of signal transition. Input filter time selection does not affect interrupt response. In terms of field wiring, a single connection is required between the module common and user common. This is due to the fact the 32 points share a common. However, for wiring convenience, two connections are provided.

Technical Specifications

Rated Voltage: 5 volts DC
Number of Inputs: 32 Inputs (one group)
Input Current: 1.7 mA at rated voltage
Current Required: 0.53 Amps
Input Voltage Range:  -3 to +7 volts DC
DC Power: Yes


GE Fanuc GE Fanuc Series 90-70

SKU 2175303  UPC 0606837998635

Part Number: IC697MDL651 / ic697mdl651
Mfr/Brand Name: GE Automation
Mfr Number: IC697MDL651 / ic697mdl651
Type: 5 volts DC (TTL) Negative Logic, Input Module, 32 Input Points

Troubleshooting and Product Information for IC697MDL651

Download product information, troubleshooting guides and operation manuals to get your PLC operational.

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Other IC697MDL651

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1C697MDL651 , GEFIC697MDL651 , CIMIC697MDL651


Rated Voltage:

5 volts DC

Inputs per Module:


98.4’ (30m) maximum cable length


1500 volts - any input to backplane

Input Voltage Range (Vs):

-3 to +7 volts DC




5.9K ohms, 5%

On-state Voltage:

-3 volts to 0.5 volts

Off-state Voltage:

2 volts to 7 volts

On-state Current:

1.7mA (typical) at rated voltage

Off-state Current:

1.1mA (maximum)

Filter Delay Time:

1 ms or 10 ms configurable

Current Required from 5V Bus:

.53 amp


System designed to support the VME standard C.1

Troubleshooting IC697MDL651

Troubleshooting information is available on IC697MDL651's website page; it also includes a datasheet user-manual and a wiring diagram.

Repair your IC697MDL651

PDF Supply can repair your IC697MDL651 in 3-5 business days. And PDF Supply stands by all of its repairs with a 1 year customer satisfaction warranty.

Customer Questions and Answers

  • Question:  What is an IC697MDL651?  Answer:  The IC697MDL651 is a TTL, Negative Logic, 32-Point Input module from the GE Fanuc Series 90-70. 
  • Question:  What features does it include?  Answer:
    • 32 TTL compatible input points
    • No user power required
    • Each input has pullup resistor
    • Input filter selectable* - 1 mS or 10 mS
    • One input configurable as interrupt*
      • *These features are available for all IC697 PLCs. They may, however, not be available when this module is used with other types of PLCs.
  • Question:  The LED indicators (located at the top of the module) do what?  Answer:  They let you know the on/off status of each point on the logic (PLC) side of the circuit. 
  • Question:  What is special about the I/O references?  Answer:  They are configurable without the use of jumpers or DIP switches on the module. 
  • Question:  Configuration of IC697MDL651 is done through what?  Answer:  Configuration of IC697MDL651 is completed using the configuration function of MS-DOS, through Windows programming software on Windows 95, through Windows NT over Ethernet TCP/IP, or through the SNP port. 
  • Question:  What should I do in the event my IC697MDL651 is not working properly?  Answer:  Your IC697MDL651 may be in need of repair

For more information on the IC697MDL651 TTL, Negative Logic, 32-Point Input Module of the GE Fanuc 90-70 Series, please see the Datasheet User-Manual. 


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