Hitachi WJ200 Series Quick Reference Manual page 45

When you set P160 - P161 to the value that are non-existent Modbus register No. and P162 - P169
to 0 or the value that are non-existent Modbus register No., WJ-PN receives data from PROFINET IO
controller, but WJ-PN doesn't set to WJ200 / WL200. When you set P160 - P169 non-existent
Modbus register No., PNU 954 bit 3 becomes ON.
When you set P170 - P171 to the value that are non-existent Modbus register No. and P172 - P179
to 0 or the value that are non-existent Modbus register No., WJ-PN doesn't read data from WJ200 /
WL200 and always sends 0 to PROFINET IO controller. When you set P170 - P179 non-existent
Modbus register No., PNU 954 bit 3 becomes ON.
Hints
Please don't assign setpoint to F001 (Modbus register No. 0x0001, 0x0002). If you want to
assign setpoint to the output frequency, you can assign it a way either of the followings.
(1) You set P161 to 0 (NSOLL_A) (The unit is % of A004)
(2) You set P160 - P169 to 0x1F14 of Modbus register No. (The unit is 0.01[Hz])
If you set P160 - P169 to F001 (Modbus register No. 0x0001, 0x0002), WJ-PN detects the warning
that PNU954 bit5 is ON and F001 of WJ200 / WL200 isn't refreshed by the communication data.
If you set P160 - P169 to the output frequency by both above (1) and (2), WJ-PN detects the
warning that PNU954 bit6 is ON and F001 of WJ200 / WL200 isn't reflected by the
communication data.
Chapter 8 PROFINET Specification
39