Pin #
Signal Name
Meaning
1
DC24V
Power input +24V
2
0V
Power input 0V
3
FG
Frame ground
Pin #
Signal
Name
Condition
1
RS
Request to Send (RS-232C)
2
SD
Send Data (RS-232C)
3
CS
Clear to Send (RS-232C)
4
RD
Receive Data (RS-232C)
5
CD
Carrier Detect (RS-232C)
6
ER
Enable Receive (RS-232C)
7
VCC
5V±5% Output 0.25A
8
SG
Signal Ground
9
NC
No Connection(Reserved)
10
NC
No Connection(Reserved)
11
NC
No Connection(Reserved)
12
NC
No Connection(Reserved)
13
RDA
Receive Data A (RS-422)
14
RDB
Receive Data B (RS-422)
15
SDA
Send Data A (RS-422)
16
SDB
Send Data B (RS-422)
17
CSA
Clear to Send A (RS-422)
18
CSB
Clear to Send B (RS-422)
19
ERA
Enable Receive A (RS-422)
20
ERB
Enable Receive B (RS-422)
When connecting the FG terminal, the unit will be more suscep-
tible to noise. Be sure to earth (ground) the unit.
DC24V I/F
This interface is for DC24V input.
• Since Pin#7's (VCC) DC5V output is unprotected, be sure to
keep the output current within the rated range.
• This unit's serial port is not isolated, therefore, it is important
that you connect the SG (#8) terminals. If this is not done, the
RS422 circuit may be damaged.
This interface is used to connect the GP to the host (PLC), via an RS-232C or RS-
422 cable. The connector is located inside the Cable Cover, on the circuit board.
4
External Interfaces
• When connecting the GP2000H to an external device, be sure to use a
Digital Electronic Corporation GP2000H Option Cable.
• When attaching the optional Cable Cover, to ensure a water-resistant
seal, be sure to tighten all attachment screws to 0.5N•m.
• The SG and FG terminals are connected internally in the GP unit.
• When connecting the SG line to another device, be sure that the de-
sign of the system/connection does not produce a shorting loop.
Serial I/F
This RS-232C/RS-422 interface is used to connect the GP2000H with a Host unit.
20
2
19
1
1
2
3