The serial interface of the GP4100 Series is a two-piece 9-pin terminal connector for both GP-4105x (RS-232C type) and GP-4106x (RS-422/485 type), located on the right side of the unit.
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| Important |
GP-4104 is a Ethernet model and doesn't have the serial interface. |
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(Example) GP-4105G (RS-232C type) |
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Performance specifications are as follows. |
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| Model |
Performance Specification |
| GP4105 |
RS-232C
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- Asynchronous transmission
- Data length: 7 or 8 bit
- Stop bit: 1 or 2 bit
- Parity: None, odd or even
- Data transmission speed: 2,400 bps to 115.2 kbps
- Connector: 2-piece terminal block 9 pin |
| GP4106 |
RS-422/485
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| Important |
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For the cable diagram and communication settings for device connection, please refer to "GP-Pro EX Device/PLC Connection Manual." |
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The RS-232C and RS-422/485
are not isolated.
In particular, when
the device connected to is not isolated,
please be sure to connect a SG pin of the GP4100 and a SG pin of the device.
If not, the circuit of
RS-232C/RS-422/RS-485 might be damaged. |
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In the RS-232C and RS-422/485, SG (Signal Ground) and FG (Frame Ground) are internally connected. For the connection of a device with SG, please be sure to design the system not to induce a short-circuit loop. |
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The details of connector pins are as follows. |
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RS-232C Type (GP4105), RS-422/485 Type (GP4106)
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| MEMO |
In the RS-422/485 type, a terminating resistance can be set with a DIP switch (4 bits) on the rear side of a unit. All bits are OFF in the factory default setting (no terminating resistance set). Please set a terminating resistance when needed after confirming the necessary one for connection to a device in use (PLC). For details, please refer to "GP-Pro EX Device/PLC Connection Manual." |
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