Module spare parts IC698CRE040-HN

Focus on DCS, PLC, robot control system and large servo system.

Main products: various modules / cards, controllers, touch screens, servo drivers.

Advantages: supply of imported original products, professional production parts,

Fast delivery, accurate delivery time,

The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands

Chapter 4 – Communication This chapter describes the Modbus communication on ACS 140 drives. Introduction to Modbus Modbus is a serial, asynchronous protocol. The Modbus protocol does not specify the physical interface. Typical physical interfaces are RS232 and RS485, both of which are supported by the adapter. Modbus is designed for integration with Modicon PLCs or other automation devices, and the services closely correspond to the PLC architecture. The ACS 140 drive ‘looks like’ a Modicon PLC on the network. If detailed information regarding the Modicon Modbus protocol is required, contact your ABB supplier for a copy of Modbus Protocol Guide. Register Read and Write The ACS 140 has all drive parameter, control and status information mapped into a 4xxxx register area. This holding register area can be read from an external device, and an external device can modify the register values by writing to them. There are no setup parameters for mapping the data to the 4xxxx register. The mapping is pre-defined and corresponds directly to the ACS 140 parameter grouping. All parameters are available for both reading and writing. The parameter writes are verified for correct value, and for valid register addresses. Some parameters never allow writes (including Group 1 actual values), some parameters allow write only when the drive is stopped (including Group 99 setup variables), and some can be modified at any time (including e.g. Group 22 acceleration and deceleration ramp times