FPΣ User's Manual 
 
12.8 MEWTOCOL-COM Communication Commands 
303 
12.8  MEWTOCOL-COM Communication Commands 
 
Command name  Code  Description 
Read contact area 
RC 
(RCS) 
(RCP) 
(RCC) 
Reads the on and off status of contacts. 
- Specifies only one point. 
- Specifies multiple contacts. 
- Specifies a range in word units. 
Write contact area 
WC 
(WCS) 
(WCP) 
(WCC) 
Turns contacts on and off. 
- Specifies only one point. 
- Specifies multiple contacts. 
- Specifies a range in word units. 
Read data area 
RD  Reads the contents of a data area. 
Write data area 
WD  Writes data to a data area. 
Read timer/counter set value area 
RS  Reads the value set for a timer/counter. 
Write timer/counter set value area 
WS  Writes a timer/counter setting value. 
Read timer/counter elapsed value area
RK  Reads the timer/counter elapsed value. 
Write timer/counter elapsed value area
WK  Writes the timer/counter elapsed value. 
Register or Reset contacts monitored 
MC  Registers the contact to be monitored. 
Register or Reset data monitored 
MD  Registers the data to be monitored. 
Monitoring start 
MG  Monitors a registered contact or data using MD and MC. 
Preset contact area (fill command)  SC 
Embeds the area of a specified range in a 16-point on and 
off pattern. 
Preset data area (fill command)  SD 
Writes the same contents to the data area of a specified 
range. 
Read system register 
RR  Reads the contents of a system register. 
Write system register 
WR  Specifies the contents of a system register. 
Read the status of PLC  RT 
Reads the specifications of the PLC and error codes if an 
error occurs. 
Remote control 
RM  Switches the operation mode of the PLC. 
Abort 
AB Aborts communication.