Auxiliary contact, Multi9 M9A, OF, 1 C/O, 100mA to 6A, 24VAC to 415VAC, 24VDC to 130VDC, bottom connection - 3D CAD

IMPORTANT NOTE: This document is still posted for reference, but the formal application protocol specification and implementation guides must be obtained from www.modbus.org. Describes the use of Modbus protocol in communications between programmable controllers and other devices. Explains how messages are constructed and parsed by Modbus devices, and how transactions take place between devices using the protocol.