Remote input/output modules
Remote input and output modules are used to expand the number of inputs and outputs on the control system and to connect remote signals, thus making considerable cost savings on cabling. Moreover, connecting signals for extension modules in the location where the signals emanate increases interference resistance mainly in analogue signals. The values are transferred to the control system via secure communication protocol and therefore cannot be distorted.
The control systems’ CPU units are usually so powerful that they have no difficulty in managing many more inputs and outputs than can be physically connected to the control system. The best value can be achieved by using extension modules which are cheaper than control systems.
AMiT offers a number of extension modules in its DM-xx series (ARION communication protocol) and DMM-xx (Modbus RTU protocol). The modules can be simply single-type (one type of I/O signal) or combined. Moreover, all types of modules are produced with the option of a wider range of temperatures (-40 to 50°C).