| Port specification | Interface | Connection mode | Communication protocol | Connected device | |
|---|---|---|---|---|---|
| Port 1 | Dedicated | RS-232C | 1 : 1 | H-Protocol (procedure 1 or 2) |
PC (Programming software or SCADA), HMI, etc. |
| AT command, H-Protocol (procedure 1 or 2) |
Modem | ||||
| RS-422 * | 1 : 1 | H-Protocol (procedure 1 or 2) |
PC(Programming softtware or SCADA), HMI, etc. | ||
| 1 : N | H-Protocol with station number (procedure 1 or 2) |
||||
| ES-485 * | 1 : 1 | H-Protocol (procedure 1) |
PC (Programming software or SCADA), HMI, etc. | ||
| 1 : N | H-Protocol with station number (procedure 1 or 2) |
||||
| General purpose | RS-232C | 1 : 1 | No protocol operated by TRNS/RECV command in user program | Bar code reader, serial Printer, PC, etc. | |
| RS-422 * | 1 : 1, 1 : N | ||||
| RS-485 * | 1 : 1, 1 : N | ||||
| Port 2 | Dedicated | RS-232C | 1 : 1 | H-Protocol (procedure 1) | PC (Programming software or SCADA), HMI, etc. |
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