Pro-face AGP-3300 Series, Руководство пользователя

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AGP-3300 Series User Manual
2-8
2.3 Interface Specifications
2.3.1 Serial Interfaces
„
AGP-3300/3301 Series
‹
Serial Interface (COM1)
This interface is used to connect an RS-232C or RS-422 (serial)
*1
cable. A D-sub 9-pin plug connector is
used.
• The AGP unit’s serial port is not isolated. When the host (PLC) unit is also not
isolated, be sure to connect the #5 SG (Signal Ground) terminal to reduce the risk
of damaging the RS-232C/RS-422 circuit.
• Inside the AGP unit, the SG (Signal Ground) and FG (Frame Ground) terminals
are connected.
• When connecting an external device to the AGP using the SG terminal, be sure
to check that no short-circuit loop is created when you setup the system.
Pin
Arrangement
Pin
No.
RS-232C
Signal
Name
Direction Meaning
1 CD Input Carrier Detect
2 RD(RXD) Input Receive Data
3 SD(TXD) Output Send Data
4 ER(DTR) Output Data Terminal Ready
5 SG - Signal Ground
6 DR(DSR) Input Data Set Ready
7 RS(RTS) Output Request to Send
8 CS(CTS) Input Send Possible
9
CI(RI)
/VCC
Input/-
Called status d5V±5% Out-
put 0.25A
*2
Shell FG - Frame Ground (Common with SG)
Pin
Arrangement
Pin
No.
RS-422
Signal
Name
Direction Meaning
1 RDA Input Receive Data A (+)
2 RDB Input Receive Data B (-)
3 SDA Output Send Data A (+)
4 ERA Output Data Terminal Ready A (+)
5 SG - Signal Ground
6 CSB Input Send Possible B (-)
7 SDB Output Send Data B (-)
8 CSA Input Send Possible A (+)
9 ERB Output Data Terminal Ready B (-)
Shell FG - Frame Ground (Common with SG)
9
6
5
1
9
6
5
1