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o The bottom node (a value of 1 in the example) may be set to any value from 1
to 100 but only one address is involved from the middle node.
Port Delay Timer
Each Modbus port (one or two) can be assigned a time delay value from IO
milliseconds to 200 milliseconds in duration. You use the Modsoft configurator
PORTS menu to do this.
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Comm Switch Configuration
for MODBUS, Ports
MODBUS Ports 1 and 2 are software configurable, but through-thechassis,
user
accessible DIP switch has been provided to manually configure Modbus Port 1 on
the 984 CPU. The second port is software configurable only. The MEM (software)
DIP switch (default) is enabled (even while operational) using a toggle switch lo-
cated on the controller side panel.
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Note
The switch used for Modbus Port 1 fixed defaults is selected by
opening (off) or closing (on) DIP switch 8.
In the " Default" or " Mem" positions you will power up with the following parameters
in Table 5:
GM-O984-EDK
System
Planning
37
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Troubleshooting
