MAIN CHARACTERISTICS range of product MODICON QUANTUM AUTO PLATFORM product or component type UNITY PROCESSOR COMPLEMETARY CHARACTERISTICS clock frequency 66 MHZ number of slots 10 number of racks 2 - LOCAL RACKS number of distributed I/O station 63 station(s) - 1 rack(s) - 3 Modbus Plus network(s) number of remote I/O station 31 - 2 S908 REMOTE IO RACKS discrete I/O number UNLIMITED 27 SLOTS MAX - LOCAL analogue I/O number UNLIMITED 27 SLOTS MAX - LOCAL application specific I/O ACCURATE TIME STAMPING number of optional modules 2 ( Ethernet, Modbus, Modbus Plus, Profibus DP, Sy/Max) maximum number of connections 1 ( USB) integrated connection type 1 Modbus Plus with checks PROCESS CONTROL memory description INTERNAL RAM 548 KB switch function SLD SWT COM PRT ASCII RTU MEM application structure 1 cyclic/periodic master task - execution time per instruction 0.1...0.27 S FLOATING POINTS number of instructions per ms 1.86 KINSTMS IF 100 BOOLEAN system overhead 0.2 MS - FAST TASK bus current requirement 1800 MA local signalling 1 LED GREEN FOR COMMUNICATIONS ARE ACTIVE ON THE MODBUS PLUS PORT MODBUS PLUS electrical connection 1 FEMALE CONNECTOR CONNECTOR TYPE SUB-D 9 FOR CONNECTING TO THE MODBUS PLUS NETWORK