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R-85
A Standard System Protocol
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
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Protocol
Configur
ation
*1 Depends on the measurement contents.
*2 Interrupt notification is only supported by the serial communications board (CS1W-SCB21-V1/SCB41-V1). (A protocol syn-
tax error will occur with the Serial Communications Units (CS1W-SCU
@@ (-V1) and CJ1W-SCU @@ (-V1)).
Do not set an EM bank as the receive storage word for interrupt notification. A protocol syntax error will occur if an EM
bank is set.
Note The hexadecimal equivalents of sequences numbers are given in parentheses.
Ladder Interface Settings
YES:
User settings are required for the 3rd and 4th operands of PMCR(260).
NO: Send word allocation: Set the constant 0000 for the 3rd operand (S).
Receive word allocation: Set the constant 0000 for the 4th operand (D).
442 (01BA) Forced zero release
(4000-series) Releases the forced zero direction. No No
443 (01BB) 3Z4L initialize (4000-series) Clears the 3Z4L, sets the mm unit, and
clears the switches unit settings in
sequence. Yes No
444 (01BC) General-purpose command 1 Used to send data of a specified data
length, and receive only OK as the
receive data. Yes No
445 (01BD) General-purpose command 2 Used to send data of a specified data
length, and receive data other than OK. Yes Yes
446 (01BE) High calibration set Sets the Laser Micrometer's high calibra-
tion. Yes No
447 (01BF) Low calibration set Sets the Laser Micrometer's low calibra-
tion. Yes No
Sequence
No.
Communications sequence
name
Function Ladder interface
Send word
allocation
Receive
word alloca-
tion