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Appendix K3Z4L Laser Micrometer Protocol
319
Sequence
No.
Ladder interfaceFunctionCommunications sequence
name
Sequence
No.
Receive
word
allocation
Send word
allocation
FunctionCommunications sequence
name
439 Data request (4000-series) Requests measurement data in the idle
measurement status or the latch data
generated by the measurement com-
mand.
No Yes
440 Forced positive zero
(4000-series)
Sets the forced zero direction to positive
(+).
No No
441 Forced negative zero
(4000-series)
Sets the forced zero direction to negative
(–).
No
No
442 Forced zero release (4000-se-
ries)
Releases the forced zero direction. No No
443 3Z4L initialize (4000-series) Clears the 3Z4L, sets the mm unit, and
clears the memory unit settings.
Yes No
444 General-purpose command 1 Used to send data of a specified data
length, and receive only OK as the re-
ceive data.
Yes No
445 General-purpose command 2 Used to send data of a specified data
length, and receive data other than OK.
Yes Yes
*1 Depends on the measurement contents.
Note Ladder Interface Settings
YES: User settings are required for the 2nd and 3rd operands of PMCR.
NO: Send word allocation: Set a dummy word address for the 3rd operand (D).
Receive word allocation: Set the constant 0000 for the 2rd operand (S).
Connections
The connections for the 3Z4L Laser Micrometer Protocol are shown below.
RS-232C Connection
Sensor
Signal cable
Controller
Serial Communica-
tions Board
RS-232C Port
FG
SD
RD
RS
CS
DR
ER
SG
1
2
3
4
5
7
8
9
Pin No.
Serial Communications Board:
D-sub 9 pin (female)
Controller: D-sub
25 pin (female)
Signal
name
FG
TXD
RXD
RTS
CTS
DSR
SG
DTR
1
2
3
4
5
6
7
20
Pin No.
Signal
name
CQM1H