616
Auxiliary Area Allocations by Function Appendix C
Modbus-RTU Easy Master Information (CP1L CPU Units with L CPU Type)
Note DM fixed allocation words for Modbus-RTU Easy Master for serial port 2: D32300 to D32399
Instruction-related Information
Function Block Information
Function Block Memory Information
OMRON FB Library Information
Note These Auxiliary Area bits/words are not to be written by the user. The number of resends and response monitoring time must be
set by the user in the FB communications instructions settings in the PLC Setup, particularly when using function blocks from the
OMRON FB Library to execute FINS messages or DeviceNet explicit messages communications. The values set in the Settings for
Name Address Description Access Updated
Serial Port 1 Modbus-RTU
Master Execution Bit
A640.00 Turn ON this bit to send a command and receive a
response for serial port 2 using the Modbus-RTU easy
master function.
This bit will be turned OFF automatically by the system
when communications have been completed.
Turned ON: Execution started
ON: Execution in progress.
OFF: Not executed or execution completed.
Read-only
Serial Port 1 Modbus-RTU
Master Execution Normal
Flag
A640.01 ON when one command has been sent and the
response received for serial port 2 using the Modbus-
RTU easy master function.
ON: Execution normal.
OFF: Execution error or still in progress.
Read-only
Serial Port 1 Modbus-RTU
Master Execution Error Flag
A640.02 ON when an error has occurred in communications for
serial port 2 using the Modbus-RTU easy master func-
tion. The error code is output to D32252 in the DM fixed
allocation words for Modbus-RTU Easy Master.
ON: Execution error.
OFF: Execution normal or still in progress.
Read-only
Name Address Description Access Updated
Step Flag A200.12 ON for one cycle when step execution is started with
STEP(008).
Read-only
Macro Area Input Words A600 to
A603
Before the subroutine specified in MCRO(099) is exe-
cuted, the source words for the subroutine are trans-
ferred to A600 through A603 (input parameter words).
Read/write
Macro Area Output Words A604 to
A607
After the subroutine specified in MCRO(099) has been
executed, the results of the subroutine are transferred
from A604 through A607 to the specified destination
words (output parameter words).
Read/write
Name Address Description Access Updated
FB Program Data Flag A345.00 Turns ON if the FB program memory contains FB pro-
gram data.
OFF: No data
ON: Data present
Read-only
Name Address Description Access Updated
FB Communications Instruc-
tion Response Required
A580.15 0: Not required
1: Required
Read-only
FB Communications Instruc-
tion Port No.
A580.08 to
A580.11
0 to 7 hex: Communications port No. 0 to 7
F hex: Automatic allocation
Read-only
FB Communications Instruc-
tion Retries
A580.00 to
A580.03
Automatically stores the number of retries in the FB com-
munications instruction settings specified in the PLC
Setup.
Read-only
FB Communications Instruc-
tion Response Monitoring
Time
A581 Automatically stores the FB communications instruction
response monitoring time set in the PLC Setup.
0001 to FFFF hex (Unit: 0.1 s; Range: 0.1 to 6553.5)
0000 hex: 2 s
Read-only
FB DeviceNet Communica-
tions Instruction Response
Monitoring Time
A582 Automatically stores the FB DeviceNet communications
instruction response monitoring time set in the PLC
Setup.
0001 to FFFF hex (Unit: 0.1 s; Range: 0.1 to 6553.5)
0000 hex: 2 s
Read-only
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