Mitsubishi Electric MELSEC iQ-R Series User Manual page 92

Slave function own node area
The communication status of the slave function and error information are stored.
■Slave function communication status (Un\G1536)
The I/O communication status of the slave function is stored.
The following table lists the values to be stored depending on the communication status.
Value
0000H
0040H
0080H
00C0H
• When 'Auto communication start setting' (Un\G1585) is set to "No Start"
Powering on automatically switches the status from OFFLINE (0000H) to STOP (0040H).
Turning on 'I/O communication request' (Y11) switches the status to OPERATE (00C0H).
However, the status is in READY (0080H) until the I/O communication request is transmitted from the master node.
• When 'Auto communication start setting' (Un\G1585) is set to "Start"
Powering on automatically switches the status from OFFLINE (0000H) to OPERATE (00C0H).
However, the status is in STOP (0040H) until the I/O communication request is transmitted from the master node.
• When a reset message is received from the network
The status automatically returns to OFFLINE (0000H) and switches to OPERATE (00C0H) from OFFLINE (0000H).
■Slave function error information (Un\G1537)
The communication error code compatible with the QJ71DN91 occurred in the slave function is stored.
As the communication error codes are the same as those of the QJ71DN91, refer to the following.
 DeviceNet Master-Slave Module User's Manual
For how to notify error occurrence and how to clear this area, refer to the following.
Page 69 For slave function error (X08), (Y18)
■Slave function communication error information (Un\G1153)
The communication error code which occurs on the own node in the slave function mode is stored. ( Page 59 Error code
for module diagnostics (own node error))
The node address (MAC ID) of the node where an error has occurred is stored in the lower byte of the communication error
code.
• FEH, FFH (254, 255): Own node (RJ71DN91 slave node)
• 00H to 3FH (0 to 63): Node address (MAC ID) of the node where an error has occurred
For how to notify error occurrence and how to clear this area, refer to the following.
Page 69 For slave function error (X08), (Y18)
APPX
90
Appendix 3 Buffer Memory
Name
OFFLINE
STOP
READY
OPERATE
Operation
Initializing, bus off, network power-off
I/O communication stop
Wait for connection establishment from the master node
I/O communicating