Transmitter settings
Document channel mode, fault handling, status-byte selection and every upstream/downstream I/O connection before replacement.
Series Six Communication and Analog Output
GE Fanuc IC600BF940 / IC600BF941 / IC600BF942 Series Six I/O Modules
A combined reference for the enhanced local I/O transmitter and two four-channel 12-bit analog voltage output modules.
IC600BF940Enhanced local I/O transmitter
IC600BF941Unipolar analog output module
IC600BF942Bipolar analog output module
Product Description
IC600BF940, IC600BF941 and IC600BF942 share the Series Six rack platform but serve two separate control functions. IC600BF940 is the enhanced Local I/O Transmitter that extends an I/O path to downstream equipment and can suppress its status-byte generation for specific Expanded Channel 1 redundant-processor applications. IC600BF941 and IC600BF942 are four-channel analog output modules.
The analog modules accept 12 bits of binary output data plus a channel selection from the CPU and convert the command to a field voltage. IC600BF941 is cataloged for 0 to +10 Vdc output, while IC600BF942 provides -10 to +10 Vdc bipolar output. On-board jumpers permit individual channel reassignment among supported analog output functions, but calibration and field-loop requirements must still be observed.
The transmitter belongs in the I/O communication path; the two analog modules belong at final-control signal points such as process-control references and motor-speed commands. Record the complete part number, rack location, chain connections, output range and calibration state rather than relying on the shared BF94x prefix.
Technical Specifications
| Specification | IC600BF940 | IC600BF941 | IC600BF942 |
|---|---|---|---|
| Brand | GE Fanuc | ||
| Product Type | Enhanced local I/O transmitter | Unipolar analog output module | Bipolar analog output module |
| Country | United States | ||
| System Family | Series Six / Series Six Plus | ||
| Primary Function | Interfaces an I/O rack with a downstream I/O device or station | Generates 0 to +10 Vdc control outputs | Generates -10 to +10 Vdc control outputs |
| Channels / Path | One local I/O transmitter path; supports normal or expanded I/O arrangements | 4 analog output channels | 4 analog output channels |
| Conversion | Serial I/O-chain transmission | 12-bit D/A; 1 part in 4096 | 12-bit D/A; 1 part in 4096 |
| Indicators | CHAIN OK, CHAIN PARITY, ISOLATED POWER and FAULT ENABLED | Module status LED | Module status LED |
| Configuration | Fault-isolation and status-byte options; downstream isolation | Per-channel range jumpers and calibration | Per-channel range jumpers and calibration |
| +5 V Load | 34 units | 29 units | 29 units |
| Circuit Board | 8.15 x 11.0 in (208 x 280 mm) | 8.15 x 11.0 x 1.20 in (208 x 280 x 31 mm) | 8.15 x 11.0 x 1.20 in (208 x 280 x 31 mm) |
| Faceplate | 12.46 x 1.175 in (317 x 30 mm) | ||
| Environment | 0 to 60 C operating; 5-95% RH non-condensing | ||
Communication and Analog Control
IC600BF940 separates downstream I/O stations through an isolated transmitter path and provides four front-panel condition indicators for chain and power state.
In an RPU system using conventional I/O on Expanded Channel 1, the enhanced transmitter can disable status-byte generation to avoid the register conflict identified in the GE manual.
IC600BF941 produces four unipolar voltage outputs; IC600BF942 produces four bipolar voltage outputs. Both use 12-bit CPU data and channel selection.
A revision check matters for analog output placement: early A versions are specified for local I/O, while later versions support both local and remote I/O applications.
Configuration and Calibration
Analog range
Match each channel jumper to the required output mode and verify the external load or loop arrangement.
Calibration
Use the specified calibration connector and measurement equipment, apply low-end and high-end commands, then adjust at the normal operating temperature.
Acceptance
Confirm chain indicators for IC600BF940 and prove commanded output values on all four channels for IC600BF941 or IC600BF942.
Product FAQ
Why is IC600BF940 specified in some redundant-processor Expanded Channel 1 systems?
Its status-byte generation can be disabled so that the conventional I/O status byte does not conflict with registers used by the RPU transfer functions.
What is the output-range difference between IC600BF941 and IC600BF942?
IC600BF941 is the 0 to +10 Vdc version; IC600BF942 is the -10 to +10 Vdc bipolar version.
Can every IC600BF941 or IC600BF942 revision be used in remote I/O?
No. The manual limits the A versions to local I/O and permits later versions in local or remote I/O. Confirm the alpha suffix on the installed module.
How many analog channels do IC600BF941 and IC600BF942 provide?
Each module provides four analog output channels converted from 12-bit CPU data.
What must be verified after installing IC600BF940?
Check isolated power, chain continuity, parity indication, fault-enable state and any status-byte option required by the I/O architecture.
Moore Automation
Service Commitments
Moore Automation presents four clear service commitments for industrial automation orders: 100% original products, fast delivery, a one-year warranty and a 12-hour online response.
These commitments are applied across the company's supply range for PLC, DCS, drive, HMI, communication and power components.
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