The latest firmware for JVL Industri Elekronik's integrated servo motors - MAC400 and MAC800 - now supports the Modbus RTU protocol. The implementation supports the Read Holding Registers and Write Multiple Registers commands, which will give R/W access to all motor registers at speeds up to 1Mb/sec, though typically the PC standard rates of 9,600;115,200 and 230,400 bit/sec would be used.The implementation uses the original V1.1 version of the Modbus protocol for maximum compatibility. For systems requiring a two-wire RS-485, the MAC00-P4 interface module is used. For four-wire RS-422, the MAC00-FSx modules or one of the MAC00-Bx modules are used.
