Performing A Message Transmission To A Remote Device Station - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

19.8
Performing a Message Transmission to a Remote
Device Station
G(P).RDMSG
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These instructions read/write parameters from/to the remote device station and read the status of the remote device station.
The instructions can be executed to a remote device station, for example NZ2AW1C2AL, that supports the message
transmission function.
Ladder
(U) (s1) (s2)
FBD/LD
EN ENO
U d1
s1 d2
s2
■Execution condition
Instruction
G.RDMSG
GP.RDMSG
Setting data
■Description, range, data type
Operand Description
(U) Start I/O number (first three digits in four-digit
hexadecimal representation) of a module
(s1) Start device where control data is stored
*1
(s2) Start device for storing the message data to be sent
*1
(d1) Start device for storing the message data received
(d2) Device that turns on for one scan upon completion of the
instruction
When the instruction completes with an error, (d2)+1
also turns on.
EN Execution condition
ENO Execution result
*1 For details on the send data and receive data, refer to the following.
 Manuals for the remote device stations that support the message transmission function
*2 When specifying setting data by using a label, define an array to secure enough operation area and specify an element of the array
label.
RnSFCPU RnSFCPU
(Standard) (Safety)
(d1) (d2)
Execution condition

19.8 Performing a Message Transmission to a Remote Device Station

ST
ENO:=G_RDMSG(EN,U,s1,s2,d1,d2);
ENO:=GP_RDMSG(EN,U,s1,s2,d1,d2);
Range Data type
00H to FEH 16-bit unsigned binary
Refer to the control data. Device name

Device name
 Device name

Bit
 Bit

Bit
Data type (label)
ANY16
*2
ANY16
*2
ANY16
ANY16
ANYBIT_ARRAY
(Number of elements: 2)
BOOL
BOOL
19 CC-LINK INSTRUCTIONS
19
1667