Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1490

Operand: (s1)
Device Item
+16 Error detection network
number
+17 Error-detected station
number
• The continuous area (a maximum of 960 words) for the send data length ((s1)+9) is required in the send
data storage device (d2).
• When a number from 1 to 120 is specified for the target station number, the instruction should be executed
with the execution type set to "Arrival acknowledgment used" to improve data reliability. When a group
number or all stations are specified, the instruction should be executed with the execution type set to "No
arrival acknowledgment".
• When sending data to the same channel in the receiving station, execute the instruction after data has been
read by the RECV instruction in the receiving station. When the execution type is set to "No arrival
acknowledgment", successful completion results in the sending station if communication is completed
successfully even when the send data contains an error. Also, even when the send data is normal, a timeout
results in the sending station if the instructions are executed for the same station from multiple stations.
• With the execution type set to "Arrival acknowledgment used", if the sending station sends data to the same
channel in the receiving station before the receiving station reads data using the RECV instruction, a buffer
full error results in the sending station.
CPU module
• When multiple network modules are mounted in the target station, specify the network number and station
number of the network module that receives a request from the own station.
(Example: In the following figure, specify station No.1 of network No.1 as a target station. (Station No. 5 of
network No. 2. cannot be specified.))
(Own station)
St.0
St.3
No.: Network No.
St.: Station No.
• The number of resends (s1)+7 must be set every time the instruction is executed.
15 NETWORK COMMON INSTRUCTIONS
1488
15.1 Link Dedicated Instructions
Description
The network number of the station in which an error was detected is stored. (No
information is stored if an error is detected in the own station.)
• 1 to 239 (Network number)
The station number of the station where an error was detected is stored. (No
information is stored if an error is detected in the own station.)
[Ethernet or CC-Link IE Controller Network]
• 1 to 120: Station number
[CC-Link IE Field Network]
• 125: Master station
• 1 to 120: Local station, intelligent device station, submaster station
[Own station]
Network module
SEND
CH1
CH2
·
SEND
Network No.1
(Target station)
St.1 St.5
No.1
St.2
[Target station]
Network module CPU module
CH1
CH2
Error
St.1
Specify station No.1 as the target station.
No.2
Station No.5 cannot be specified.
Setting range
1 to 239
1 to 120, 125
RECV
Set by
System
System