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Connecting to the Host’s RS-422A/485 Port Section 5-2
For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port
2, set the value 8200 hex to DM32010, 000A hex to DM32011, and 0006 hex
to DM32016.
Connecting to a CS/CJ-series Serial Communications Board
CS/CJ-series Rack-mounting Units:
CS1W-SCU31-V1 (Port 1 and port 2 are both RS-422A/485 ports.)
CJ1W-SCU31-V1 (Port 1 and port 2 are both RS-422A/485 ports.)
CJ1W-SCU41(-V1) (Port 1 is an RS-422A/485 port.)
Setting the Front Switches
Set the unit number of the Serial Communications Unit using the rotary
switches on the front of the Unit. Set the number or symbol in the setting dis-
play window in the following way using a flat-blade screwdriver. When using a
CS/CJ-series Serial Communications Unit set the switches as shown below.
2-wire or 4-wire selector (WIRE): (4-wire = RS-422A), or
(2-wire = RS-485)
Terminating resistance switch (TERM): ON (terminator ON = terminating
resistance enabled)
CPU Unit Allocation DM Area Settings
Setting is written from the Programming Device (a Programming Console or
CX-Programmer) directly into the allocation DM area (system setting area) of
the CPU Unit. After the setting is written, it becomes effective by turning the
power ON, restarting the Unit, restarting the communications port, or execu-
tion of the STUP command.
In the following table, the relevant word addresses in the allocation DM area
and settings are shown.
m = DM 30000 + 100
× unit number
When using the Memory
Link Method
With the memory link method, the connection can be made to a personal
computer and an FA computer with RS-422A.
When connecting to the host with the memory link method, it is necessary to
create a program for the memory link at the host side.
DM32011 000A Baud rate (high-speed)
DM32016 000@ @ = The highest unit number of the connected
PTs (0 to 7)
Allocated DM
Area words
Setting Setting Contents
Port 1 Port 2
m m+10 8200 N:1 NT Link Mode
m+1 m+11 000A Baud rate (high-speed)
m+6 m+16 000@ @ = The highest unit number of the connected PTs
(0 to 7)
Allocated DM Area
words
Setting Setting Contents
Port 2
4
2
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