Mitsubishi Electric GT1685 Connection Manual page 660

RS-422/485 connection diagram 4)
GOT side
*3
(Terminal block)
SDA
SDB
RDA
RDB
SG
*1 The signal name differs depending on the series name. Refer to the following table.
Energy measuring unit
Electric multi-measuring instrument
*2 Short-circuit between the following terminals of the energy measuring unit or electric multi-measuring instrument which will be a
terminal.
By the short circuit of the following terminals, a terminating resistor with 120
Energy measuring unit
Electric multi-measuring instrument
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "110 ".
When placing the GOT to the position other than the terminal, set the terminating resistor of the GOT to "OPEN".
Set the 1pair/2pair signal selection switch to "1Pair" when using the connection conversion adapter.
*4 Ground a shield correctly.
RS-422/485 connection diagram 5)
GOT side(Terminal block)
SDA
SDB
RDA
RDB
SG
RSA
RSB
CSA
CSB
*1 The signal name differs depending on the series name. Refer to the following table.
Energy measuring unit
Electric multi-measuring instrument
*2 Short-circuit between the following terminals of the energy measuring unit or electric multi-measuring instrument which will be a
terminal.
By the short circuit of the following terminals, a terminating resistor with 120
Energy measuring unit
Electric multi-measuring instrument
*3 When placing the GOT to the terminal in the system configuration, set the terminating resistor to "110 ".
When placing the GOT to the position other than the terminal, set the terminating resistor of the GOT to "OPEN".
*4 Ground a shield correctly.
19 - 6
19. ENERGY MEASURING UNIT/ELECTRIC MULTI-MEASURING INSTRUMENT CONNECTION
19.3 Connection Diagram
ELECTRIC MULTI-MEASURING
Series name
Series name
1.4.3 Terminating resistors of GOT
Connection Conversion Adapter User's manual
*3
Series name
Series name
1.4.3 Terminating resistors of GOT
ENERGY MEASURING UNIT
INSTRUMENT (1st)
Signal name
*1
1)
*1
2)
Ter
SLD
*4
Signal name 1) Signal name 2)
RS485+ RS485-
T/R+ T/R-
Signal name Signal name
RS485- < - >
T/R- < - >
ENERGY MEASURING UNIT
ELECTRIC MULTI-MEASURING
INSTRUMENT (1st)
Signal name
*1
1)
*1
2)
Ter
SLD
*4
Signal name 1) Signal name 2)
RS485+ RS485-
T/R+ T/R-
Signal name Signal name
RS485- < - >
T/R- < - >
ENERGY MEASURING UNIT
ELECTRIC MULTI-MEASURING
INSTRUMENT (1st)
Signal name
*1
1)
*1
2)
Ter
SLD
*4
is connected.
Ter
Ter
ENERGY MEASURING UNIT
ELECTRIC MULTI-MEASURING
INSTRUMENT (1st)
Signal name
*1
1)
*1
2)
Ter
SLD
*4
is connected.
Ter
Ter
*2
*2