Proline Promass 83E/F/O Modbus RS485 Operating Instructions

OperationProline Promass 83 Modbus RS4855.7 Hardware settings#Warning!5.7.1 Switching hardware write protection on/offA jumper on the I/O board provides the means of switching hardware write protection on or off.When the write protection is switched on, it is not possible to write to the device parameters viaModbus RS485.Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the powersupply is switched off before you remove the cover of the electronics compartment.1. Switch off power supply.2. Remove the I/O board ä 1023. Configure the hardware write protection accordingly with the aid of the jumpers (see Figure).4. Installation is the reverse of the removal procedure.Fig. 36: Switching write protection on and off with the aid of a jumper on the I/O board1 Jumper for switching write protection on and off1.1 Write protection switched on = it is not possible to write to the device parameters via Modbus RS4851.2 Write protection switched off (factory setting) = it is possible to write to the device parameters via Modbus RS485Page 54 • MN0M030Issue/Rev. 0.2 (12/12)