Mitsubishi Electric NZ2FTGN User Manual page 297

Checking method
The following describes how to check whether Process alarm has occurred and how to read Process alarm data.
1.
Use the following dedicated instruction at the master station to read Collective process alarm message for I/O modules
(4 words from the register address 101CH) from the NZ2FT-MT register. 1 indicates that there is an unacknowledged
Process alarm.
• When the master module is the RJ71EN71: GP.ECPRTCL ( MELSEC iQ-R Ethernet User's Manual (Application))
• When the master module is the QJ71MT91: Z.MBRW ( MODBUS/TCP Interface Module User's Manual (Details))
2.
From the read Collective process alarm message for I/O modules value, identify the mounting position of the I/O module
that is detecting Process alarm. ( Page 294 Collective process alarm message for I/O modules)
3.
Use a dedicated instruction to read Process alarm data of the I/O module that is detecting Process alarm. The register
address of Process alarm data to be read is the following.
Register address B000H + 32 words  32 words from (mounting position -1)
■GP.ECPRTCL settings
When using the dedicated instruction GP.ECPRTCL, create a protocol for the predefined protocol support function in
advance.
For the procedure for creating protocol setting data, refer to the following.
Page 272 Creating protocol setting data
Set the following on the "Add Protocol" window.
Item
Type
Protocol No.
Manufacturer
Model
Protocol Name
When protocol number 1 is added, click "Variable Unset" in "Packet Setting" and set the packet setting data to be sent and
received.
Setting details
Predefined Protocol Library
1
General-purpose protocol
MODBUS/TCP
04: RD IN Registers
11
11 NZ2FT-MT
295
11.4 Functions