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Preparation for Operation Section 7-3
Turn OFF the CPU Unit’s Communications Switch to use allow customized
communications settings for the communications port. Communications
through the RS-232C port are governed by the PC Setup settings in DM 6645
through DM 6649 and communications through the peripheral port are gov-
erned by the PC Setup settings in DM 6650 through DM 6654.
Set DM 6650 and DM 6651 as follows.
Note The peripheral port’s host link node number must be set to 00. Operation will
be disabled if any other value is set.
7-3-4 Component Settings
Make the following settings on the components connected to the Simple Com-
munications Unit. Refer to the component’s manuals for details on these set-
tings.
Unit Number
Set the component’s unit number between 0 and 31. Do not use a unit number
that is already set on another component.
Communications Settings
Set the same communications settings that were set for the Simple Communi-
cations Unit in
7-3-2 Switch Settings.
Enable Remote Communications Writing
Specify “Enable Communications Writing (Remote)” for the setting mode. If
“Disable Communications Writing (Local)” is specified, it won’t be possible to
change the component’s SVs.
Terminating Resistance
Terminating resistance must be set on the component at the end of the RS-
422/RS-485 communications cable. Turn on the termination resistance switch
on the last component.
Word Setting Function
DM 6650 0001 Use communications settings in DM 6651.
DM 6651 0304 19,200 bps baud rate, 1 start bit, 7 data bits, 2 stop bits,
and even parity
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