This instruction manual introduces the communication function of the portable gas analyzer, including communication specifications, connection, communication condition setting, MODBUS communication protocol, information details, address mapping and data format.
This manual provides detailed information on the communication functions of the Fuji Electric ZSV portable gas analyzer, including RS‑232C and RS‑485 interfaces, MODBUS protocol settings, and wiring diagrams. It also covers configuration parameters such as baud rate, data format, and node addressing.
Safety precautions, terminal assignments, and troubleshooting guidelines are included to ensure proper installation and reliable operation of the device in field applications. This manual is written in Japanese.
| Communication Interface | RS-232C (with optional RS-485 converter) |
|---|---|
| Baud Rate | 9600 bps |
| Data Bits | 8 bits |
| Maximum Nodes (RS‑485) | 31 slave devices |
| Communication Mode | Half‑duplex |
| Protocol | MODBUS RTU |
The communication speed is fixed at 9600 bps.
Up to 31 slave devices can be connected when using the RS‑485 interface.
The data format uses 8 data bits, 1 stop bit, and no parity.
The device follows the MODBUS RTU protocol.