User Manual

SUP0740-07 CH.8
11/30/2009 Page 61 of 98 # 958
3. A Modbus TCP Master can determine if the OCS is RUN mode in either of the following
two ways:
a. By reading the OCS Always On register (%S7), which is 1 if the OCS is in RUN
mode and 0 if the OCS is not
in RUN mode (because of item 2 above).
b. By issuing a Read Exception Status request, which returns an Exception Status
of 0 if the OCS is in RUN Mode or 1 if the OCS is not
in RUN mode.
4. When “Write Inhibit” is enabled in the configuration:
a. If the configured register value is “high”, slave cannot write any values to the
master.
b. If the configured register value is “Low”, slave can be enabled to write values to
the master.