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Using FINS Message Communications Section 6-3
Communications Flags
Communications Flag Operation
• The Network Enabled Flag turns OFF when instructions are being sent or
received (from when the instruction is issued until the response is
received) and turns ON when the execution has been completed, whether
normally or with an error.
• The Network Error Flag maintains its status until the next send or receive
is executed.
• The Network Error Flag turns OFF when the next communications
instruction is executed, regardless of whether the previous execution
ended with an error.
• The relationship between the Message Communications Permitted Flag
and the NS indicator and between the Message Communications Permit-
ted Flag and the NS indicators on the front of the DeviceNet Unit is shown
SEND(090), RECV(098), or CMND(490)
Execution
condition
Network
Enabled Flag
Message
Communications
Permitted Flag
word n+24, bit 12
Type Name Address Content
Word Bit
CPU Unit Network Enabled Flag A202 0: Execution not possible (execut-
ing)
1: Execution possible (not execut-
ing)
Network Error Flag A219 0: Normal completion
1: Error
7 6 5 4 3 2 1 0
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
7 6 5 4 3 2 1 0
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7