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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Modbus Translator Module Introduction The Modbus translator is an electrical device powered from a 12 to 48 Vdc source that provides data exchange between the RS-232 port of a Capstone microturbine system and RS-485 Modbus devices. The Modbus translator uses a microprocessor to communicate with the Capstone microturbine system to provide data over a RS-485 Modbus network. Serial connector P1 of the Modbus translator is configured as the RS-232 port for connection to the microturbine, and serial connector P2 is configured as the RS-485 port for connection to the Modbus device. The Modbus translator also offers Modbus over TCP/IP functionality. This protocol is available on the LAN 2 port. The Modbus translator connects to the serial port on the User Connection Bay (UCB) of Capstone C30, C65 and C200 microturbines. The Advanced Power Server (APS) and the C1000 series controller have Modbus connectivity built in and do not require the Modbus translator. The Capstone Power Server (superseded by the APS), which is no longer manufactured, also used the Modbus translator. The Modbus translator is a self-contained pre-programmed unit, designed for instant connectivity with a Capstone MicroTurbine. There is no customer requirement to open the unit – all necessary connectors are on the exterior of the unit. Material Information The Modbus translator is provided in two separate kits. One kit is for standard humidity environments and the other kit is for high humidity environments. Each kit contains the Modbus translator unit along with the necessary interface components. The kit part numbers and the items contained in the kits are described below. Part Number Description Quantity Modbus Translator Kit 527323-100 Modbus Translator, Programmed Cable, DB9F-DB9F, Null Modem (RS-232) Connector, DB9F-to-TB 1 1 1 1 1 1 527324-100 527457-001 527458-001 Modbus Translator Kit, Greased 527422-100 527424-100 527457-001 527458-001 Modbus Translator, Programmed, Greased Cable, DB9F-DB9F, Null Modem (RS-232) Connector, DB9F- to-TB 410078 Rev A (July 2009) Page 4 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.PDF Image | Technical Reference Modbus Translator Module (MOXA®)
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