Rockwell Automation 5370 CVIM Communications Manual - Manual (Page 43)

Chapter 4
Using the Remote I/O Link
(Node Adapter)
4–6
When installed on a Remote I/O network, the CVIM module acts as a slave
device. Another device such as a PLC or computer will act as a host device.
This means that the CVIM module will not initiate the sending of any data
until a request is made by the host. To a host device, the CVIM module will
appear simultaneously as both a full I/O rack on the network (128 input bits
and 128 output bits) and as an intelligent module with block transfer
capability in group 0, slot 0 in the same rack. Refer to Appendix B for a
description of discrete bit data.
Note: If the CVIM module is the last node on a network, you must terminate
the communication line (refer to Figure 4.9 for an example).
A hist link can request or manipulate the following data over the Remote I/O
link:
•
Obtain CVIM module inspection result information. Refer to Appendix B
& C.
•
Upload or download CVIM module configurations for inspections. Refer
to Appendix D.
•
Issue Configuration Read/Write commands between the following CVIM
module memory locations:
CVIM module Random Access Memory (RAM) and CVIM module
Electrically Erasable Programmable Only Memory (EEPROM). RAM is
volatile and EEPROM is non-volatile.
CVIM module RAM and RAM card. The RAM card slides into a slot on
front of the CVIM module.
CVIM module RAM and host memory.
•
Change run-time display menus.
•
Enable/Disable local I/O board.
•
Force local I/O On or Off.
Remote I/O Communications
(cont’d)
What Functions can be
Performed over the
Remote I/O Network?