Confirmation By Status Information (Status Word) - Mitsubishi Electric NZ2FTGN User Manual

Confirmation by status information (Status word)

The following describes assignment to the buffer memory, data configuration, and referring method of Status word of the
NZ2FT-EIP.
Assignment of the master module to the buffer memory
Status word is stored in the start of Input data.
Buffer memory
Address
10000H
Station No.1
Station No.20 (maximum)
30000H
Station No.1
Station No.20 (maximum)
Data configuration
■Status word
Bit Item
0 Error bit 0
1 Module sequence not clear
2 Error bit 2
3 System bus error
4 Errorbit 4
5 Unacknowledged process alarm
6 I/O-Configuration error
7 to 9 Error bit 7 to 9
10 Force mode active
11 to 12 Error bit 11 to 12
12 NZ2FT-EIP
410
12.9 Troubleshooting
Input data
Status word (2 bytes)
Process data (variable)
System area (8 bytes)
Output data
Control word (2 bytes)
Process data (variable)
System area (8 bytes)
Description
System area
0: Normal (A disconnected I/O module has been reconnected.)
1: Two or more I/O modules are disconnected during operation.
System area
Indicates the System bus status.
0: Normal
1: Error
System area
Indicates whether the status of "Process alarm" of the I/O module has changed.
■When Process alarm is Disabled
0: Process alarm is not monitored.
■When Process alarm is Enabled
0: All I/O modules are normal, Process alarm data of all I/O modules has been checked, or Process alarm
of all I/O modules whose status had changed has been read.
1: There is an I/O module whose status change is not checked.
NZ2FT-EIP configuration error
0: Normal
1: Error
This bit is set to 1 when the configuration information saved in the NZ2FT-EIP does not match with the
current configuration information.
During I/O module replacement, this bit is set to 1 when the module is disconnected and is set to 0 when a
new module is mounted.
System area
0: Unexecuted
1: In the Force mode
System area