43
2–8–4 Inhibiting the ALARM Indicator
To inhibit the ALARM indicator when using EP–ROM, set DIP switch pin 5 to
ON as shown below.
Connect a backup battery to preserve data memory, current counter value,
and HR area bits, in case of a power failure. In order to maintain the battery,
DIP switch pin 5 should normally be set to OFF. In any case, it must always
be OFF when using RAM.
2–8–5 Setting the I/O Link Unit
In order for the I/O Link Unit to operate, it is necessary to determine the as-
signment of I/O words between the I/O Link Unit and the Remote I/O Master
Unit controlled by the CPU. This is done with the DIP switch on the I/O Link
Unit. The following explanation is intended only to give a general outline of
the proper procedure. For details, refer to the Optical Remote I/O Systems
manual.
Caution Be certain that power is off before setting the DIP switch. Setting it with the
power ON can cause the Unit to malfunction.
1, 2, 3... 1. Check the last assigned word number on the CPU. When setting the I/O
Link Unit, be sure not to overlap the words or to exceed the number of
I/O points in the CPU.
2. Turn OFF the power to the I/O Link Unit.
3. Check to be sure that the power supply LED light is off. Remove the
cover on the side panel of the Unit, using a screwdriver if necessary.
Settings Section 2–8
To Next Page
Loading...
Need help?
General
