CV500BC051 Omron, CV500BC051 Datasheet - Page 217

• Manufacturer Part Number: CV500BC051
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500BC051

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6-3
SEND/RECV Flags
CS/CJ-series PLCs
192
Using the Message Service
Using the Message Service
Execution
condition
Reset B
Reset D
Execution
condition
A
A
A
Active Node Flag for
source node
Network Instruction Error Flag
(Continues in the same way.)
Network Instruc-
tion Enabled Flag
Network Instruc-
tion Error Flag
Network Instruction
Enabled Flag
Network Instruction
Enabled Flag
Network Instruction
Enabled Flag
Active Node Flag for
destination node
Note With CS/CJ-series PLCs, ports 0 to 7 are also used for executing the PMCR
Name
With SEND, RECV, and CMND, the Network Instruction Enabled Flag and
Network Instruction Error Flag are generally written into the program as input
conditions, as shown below. Only one instruction can be executed at a time for
any given communications port. Exclusive control thus must be incorporated
to execute two or more instructions per operating level with C200HX/HG/HE
PLCs, nine or more instructions with CS/CJ-series, CVM1, and CV-series
PLCs (because CVM1 and CV-series PLCs have eight ports), or two or more
instructions with CQM1H-series PLCs.
(Protocol Macro) instruction, therefore these flags are used for the 4 instruc-
tions, SEND/RECV/CMND/PMCR. When the PMCR command is being exe-
cuted, the same port cannot be used for SEND/RECV/CMND instructions.
C
A
A202
A219
Startup differ-
ential
DIFU B
Word
Communications
instruction
@SEND
@RECV
@CMND
KEEP A
Keep instruction
Operand and
control data cre-
ation by @MOV
and @XFER
KEEP C
Keep instruc-
tion
Port number corresponds
to bit number, i.e., port 0:
bit 00, port 1: bit 01, etc.
Port number corresponds
to bit number plus 8, i.e.,
port 0: bit 08, port 1: bit 09,
etc.
Address
Creates reset input. (Turns reset B ON after execution of
communications instruction.)
In case of Send Error Flag, re-send processing
can be executed.
Creates operand and control data in a given area.
Turns A ON from beginning to completion of
communications instruction.
Executes communications instruction.
Establishes exclusive control so that no communications
instruction is started before the previous one has been
completed.
Exclusive control to prevent simultaneous execution:
Bit
0: Execution not enabled (executing)
1: Execution enabled (not executing)
0: Normal end
1: Abnormal end
Contents
Section 6-3