Gould J375

See: Modicon J375

The J375 Modbus adapter is a communication interface for the Micro 84 controller. It interfaces the Micro 84 to a Modbus industrial communication system. It allows the Micro 84 to be a slave PC to a Modbus master. The adapter is packaged in a modified Micro 84 I/O module case. This case is made with Lexan molded plastic with mounting brackets located in the rear.

The J375 provides port connections for the following: A P370 Micro 84 Programmer, an RS-232-C device and a Micro 84 controller. In addition, the adapter is equipped with factory selectable options for 1151220 VAC power. The J375 contains its own power supply that generates all operating voltages for the adapter's internal processor. The J375 does not require power from the Micro 84 or the data bus.

"Run", "Comm Active", and "Error". These indicators display both operating status and trouble indications. You can use these indicators for fast troubleshooting. The J375 provides dip switches at the rear of its case for address and system parameter selection.

Other features:

- Connects Micro 84 (slave) to Modbus communications system.
- Addressing for 247 slaves on one system
- Mounting and packaging similar to Micro 84 l/O modules
- No modifications required to Micro 84
- One RS-232-C port
- Compatible with Modicon J378 modem plus many commercial modems
- Permits simultaneous P370 programming and Modbus communications
- Comprehensive diagnostic capability and extensive error checking
- Switch selectable address and system parameters
- Supports mixed Modicon PC network