Rockwell Automation 5370 Color CVIM Communications Manual - Manual (Page 108)

Chapter 5
Using the RS–232 Ports
5–40
For example:
This example will force all outputs on. FF sets all bits in byte 3 (outputs 1
though 8) and 3F sets bits 0 through 5 of byte 4 (outputs 9 through 14).
It is possible to have outputs forced on and off at the same time. A force off
takes precedence over the force on. If multiple force commands are sent, the
forced on or off outputs will be added to those already forced.
If the BCC is not valid, the Color CVIM module will respond with a DLE
NAK and the command will not be executed.
If the BCC is valid, the Color CVIM module will respond with a DLE ACK.
Then the Color CVIM module will validate the command structure. If the
command is valid, the Color CVIM module will execute the command. If the
command structure is invalid, the Color CVIM module will not execute the
command or respond.
Note: The outputs will remain in their forced states until a deactivate forces
command is sent.
Forcing Local I/O (cont’d)