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Technical Reference Modbus Translator Module (MOXA®)

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Technical Reference Modbus Translator Module (MOXA®) ( technical-reference-modbus-translator-module-moxa® )

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Modbus Translator Module Hardware Interface Serial Connectors The Modbus translator has two DB9 male connectors (P1 and P2) for serial connection with the microturbine and Modbus device. The protocol for each connector can be configured by software as RS-232, RS-422, or RS-485. The specifications for the connector are as follows: • • • • • • • Pin 1 2 3 4 5 6 7 8 Serial Port – Software-selectable RS-232/422/485, DB9 male Protection – 15 kV built-in ESD protection for all signals Databits–5,6,7,8 Stop bit(s) – 1, 1.5, 2 Parity – None, Even, Odd, Space, Mark Flow Control – RTS/CTS, XON/XOFF, RS-485 ADDCTM Speed – 50 bps to 921.6 kbps; any baud rate supported. RS-485 (4-wire) RS-485 (2-wire) RS-232 RS-422 DCD RxD TxD DTR GND DSR RTS CTS TxDA(-) TxDB(+) RxDB(+) RxDA(-) GND TxDA(-) – TxDB(+) – DB9 Male 12345 6789 RxDB(+) RxDA(-) DataB(+) DataA(-) GND GND – – – – – – – – – Network Connectors The Modbus translator has two RJ45 connectors (LAN1 and LAN2) for connection to a network. The specifications for each connector are as follows: • LAN – 10/100 Mbps RJ45, auto-sensing • Protection – 1.5 kV built-in magnetic isolation protection. Pin Signal 1 ETx+ 2 ETx- 3 ERx+ 4– 5– 6 ERx- 7– 8– 410078 Rev A (July 2009) 8-Pin RJ45 Orange LED Green LED Page 5 of 53 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.

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