■
Precautions for programming
● Describe UNITSEL instruction immediately before the PMSET/pPMSET instruction, and
specify the slot and COM port numbers of the unit the parameters of which are changed.
● Checking of the processing result should be carried out when bit 15 (process in-progress
flag) of the area specified by [D] is switched from 1 to 0.
● If parameter change is carried out for a COM port where sending/receiving is in progress, the
sending/receiving process is canceled and parameters are changed. At this time, received
data are lost. The sending process is suspended.
● The content set by PMSET/pPMSET instruction is not held in case of power outage. Turn on
the power supply again and switch to RUN mode to return to the configuration information
set in the tool software.
● It is not possible to change the mode from other than the PLC link mode to the PLC link
mode.
● When changing the station number, make sure that the new number does not duplicate the
number for any other device.
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Comparison between the PMSET instruction and the pPMSET instruction
Instruction Characteristics
PMSET
The processing result is checked during the operation processing of the PMSET instruction.
(Note
1)
Adv
anta
ge
The PMSET instruction can be executed without any restrictions for different COM ports.
Disa
dvan
tage
It is necessary to turn ON the execution condition of the PMSET instruction until the end of
processing, and turn OFF the execution condition at a scan in which the end of data
transmission is confirmed.
pPMSET
(Note 1)
The processing result is checked at the end of a scan.
(Note 1)
Adv
anta
ge
The parameter change processing is performed only once by turning on the execution
condition at the time of data send.
Disa
dvan
tage
Up to 16 send operations can be performed simultaneously to different COM ports. (The
total of simultaneous usage of SEND, RECV, pGPSEND, GPTRNS, and pPMSET
instructions.)
(Note 1) Checking of the processing result means that the result of the parameter change processing is stored
in [D].
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Parameter settings
Operand Parameter Range Settings
[S] Communication Mode
U0
U1
U2
U8
U9
U0： MEWTOCOL-COM
U1: MEWTOCOL7-COM
U2: MODBUS-RTU
U8: General-purpose Communication
U9: PLC link (only station number can be changed)
[S+1] Station number setting U1 to U999
Station number U1 to U999
MEWTOCOL-COM: U1 to U99
MEWTOCOL7-COM: U1 to U999
MODBUS-RTU: U1 to U247
15.8 PMSET / pPMSET (Change of SCU Parameters)
15-52 WUME-FP7CPUPGR-12
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