GE-FanucIC693CMM311RCommunications Coprocessor Module, Two Serial Ports, RS-232/422/485, SNP CCM Modbus RTU, Series 90-30

Product Description

What this part is

GE Fanuc IC693CMM311 communications coprocessor module for the Series 90-30 programmable controller. Product Type: serial communications coprocessor. Serial Ports: 2, on a single 25-pin connector. Electrical Standards: RS-232 on port 1; RS-232, RS-422 and RS-485 on port 2. Protocols: SNP, CCM and Modbus RTU, master and slave. Backplane Load Current: 400 mA at 5 V DC. Unit Quantity: 1 Pc.

Decoding the designation

IC693 — the GE Fanuc Series 90-30 module family.

CMM — the communications module group within that family.

311 — the two-port communications coprocessor running SNP, CCM and Modbus RTU.

R — the hardware revision level of this unit.

Communication data

Serial Ports: 2. Port 1: RS-232. Port 2: RS-232, RS-422 or RS-485, selectable. Connector: single 25-pin D-shell carrying both ports. Protocols: SNP, CCM, and Modbus RTU in both master and slave roles. Backplane Load Current: 400 mA at 5 V DC.

What these specs mean in practice

Protocols: Modbus RTU master and slave on the same module. Master mode lets the Series 90-30 poll third-party instruments, drives and meters directly; slave mode lets a SCADA host or an operator terminal read the PLC. One module covers both directions of an integration.

Electrical Standards: RS-422 and RS-485 on port 2. The differential standards carry a multidrop line across a plant at distances an RS-232 run will not reach, and RS-485 supports several devices on one pair.

Serial Ports: 2 on one connector. Both ports are reached through the IC693CBL305 Wye cable, which splits the single 25-pin D-shell into two independent serial connections.

Backplane Load Current: 400 mA at 5 V DC. That is the figure that goes into the baseplate power budget alongside the CPU and the rest of the I/O.

Protocols: SNP. The native GE serial protocol carries programming and data access from Logicmaster and its successors over the same port hardware.

Mounting data

Mounting Type: Series 90-30 baseplate slot. Controller Platform: the modular CPUs of the GE Series 90-30 line.

Quantity and configuration

Unit Quantity: 1 Pc. One communications coprocessor module.

Interchange guidance

Manufacturer Status: discontinued. Part Number: IC693CMM311. MPN Variants: IC693CMM311R, IC693CMM311N, IC693CMM311S, IC693CMM311J, IC693CMM311K. The trailing letter is the hardware revision and later revisions supersede earlier ones within the same catalogue number. The IC693CBL305 Wye cable is the accessory that brings both serial ports out of the 25-pin connector. GE Fanuc Series 90-30 modules were carried forward by Emerson Automation.