Omron SYSMAC CS1W-ETN21 Operation Manual page 169

Communicating between OMRON PLCs
Execution
condition
Reset B
A
A
A
Execution
condition
Reset D
144
Communications
Port Enabled Flag
C
Communications
Port Enabled Flag
Communications
Port Error Flag
Communications
Port Enabled Flag
A
(Continued in same way.)
The execution status of the SEND(090), RECV(098), and CMND(490) instruc-
tions is always reflected by the communications flags (i.e., the Communica-
tions Port Enabled Flag and the Communications Port Error Flag). The CS/
CJ-series CPU Unit's communications flags are allocated in the Auxiliary Area
as shown in the following table.
Flag name
Communications Port
Enabled Flag
Communications Port
Error Flag
Note With CS/CJ-series PLCs, communications ports 0 to 7 are also used for exe-
cuting the PCMR(260) (PROTOCOL MACRO) instruction, so these flags are
used in common for SEND(090), RECV(098), CMND(490), and PCMR(260).
While PCMR(260) is being executed, SEND(090), RECV(098), and
CMND(490) cannot be executed at the same communications port.
Input A remains ON from start to completion of commu-
KEEP(011) A
nications instruction.
Creates operand and control data in a given
Operand,
area.
control data
created with
@MOV and
@XFER.
Communications
Executes communications instructions.
instructions
@SEND
@RECV
@CMND
Creates reset input. (Turns reset B ON
DIFU(013) B
after execution of communications in-
struction.)
Send Error Flag display
(Retry can be executed.)
Exclusive control so execution is not simultaneous.
Use exclusive control so that no other communica-
KEEP(011) C
tions instructions are started before execution of the
above communications instruction is complete.
Address
Word
A202 Bit 7: Port 7
Bit 6: Port 6
Bit 5: Port 5
Bit 4: Port 4
Bit 3: Port 3
Bit 2: Port 2
Bit 1: Port 1
Bit 0: Port 0
A219 Bit 7: Port 7
Bit 6: Port 6
Bit 5: Port 5
Bit 4: Port 4
Bit 3: Port 3
Bit 2: Port 2
Bit 1: Port 1
Bit 0: Port 0
Contents
Bits
OFF: Execution enabled
(being executed)
ON: Execution disabled
(not being executed)
0: Normal completion
1: Abnormal completion
Section 6-6