Omron TJ2-MC02 Hardware Reference Manual page 146

Hardware reference
Configuring the Option Board
All Option Board parameters are stored in the RX Inverter. This allows for
easy replacement of the Option Board without the need to re-configure.
After connecting the Option Board to an RX Inverter for the first time
however, proceed with the following steps:
Step 1
It is recommended to set C102 = 3 to prevent the Inverter reset input and
Stop/reset button from interfering with Option Board during operation
(Setting C102 to another value causes the Option Board to reset when a trip
condition is cleared). Use the Inverter keypad to set C102 to 3.
Param Description Setting
C102 Reset mode selection Recommended to set to 3 (Reset mode selection
resets trip only, not Option Board)
Step 2
Inverter registers P195 and P196 configure the MECHATROLINK-II
network-related parameters. Adjust these to configure the frame length and
node address.
Param Description Setting
P195 MECHATROLINK 0: 32 bytes (default after inverter reset)
frame length 1: 17 bytes
P196 MECHATROLINK 21h to 3Eh
node address
HARDWARE REFERENCE MANUAL 140