Mitsubishi Electric GT1685 Connection Manual page 662


Precautions when preparing a cable
(1) Cable length
The length of the RS-422/485 cable must be 1,000m or
less.
(2) GOT side connector
For the GOT side connector, refer to the following.
1.4.1 GOT connector specifications

Connecting terminating resistors
(1) GOT side
When connecting an energy measuring unit/electric
multi-measuring instrument to the GOT, a terminating
resistor must be connected to the GOT.
(a) For GT16 body, RS-422/485 communication unit
Set the terminating resistor using the terminating
resistor setting switch.
(b) For GT14, GT11, GT10
Set the terminating resistor using the terminating
resistor selector.
For the procedure to set the terminating resistor, refer
to the following.
1.4.3 Terminating resistors of GOT
(2) Energy measuring unit/electric multi-measuring
instrument side
When connecting an energy measuring unit/electric
multi-measuring instrument to the GOT, a terminating
resistor must be connected to the energy measuring
unit/electric multi-measuring instrument.
For details, refer to the energy measuring unit/electric
multi-measuring instrument user's manual.
19 - 8
19. ENERGY MEASURING UNIT/ELECTRIC MULTI-MEASURING INSTRUMENT CONNECTION
19.3 Connection Diagram