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mode of transmission
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Multi mode
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clock frequency
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266 MHz
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number of slots
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2
10
16
4
6
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number of racks
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2 - local rack(s)
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number of distributed I/O station
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63 station(s) - 1 rack(s) - 3 Modbus Plus network(s)
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number of remote I/O station
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31 - 2 rack(s) per S908 remote I/O
31 - 2 rack(s) per ethernet Quantum remote I/O
16 - 2 rack(s) per ethernet X80 remote I/O
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discrete I/O number
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31744 inputs, 31744 outputs - remote
8000 inputs, 8000 outputs - distributed - per network Modbus Plus
Unlimited (31 drops of 28 slots max) - ethernet remote I/O
0 - local - forbidden in Hot Standby application
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analogue I/O number
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500 inputs, 500 outputs - distributed - per network Modbus Plus
Unlimited (31 drops of 28 slots max) - ethernet remote I/O
1984 inputs,1984 outputs - remote
0 - local - forbidden in Hot Standby application
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application specific I/O
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High-speed interrupt inputs
Serial link
Accurate time stamping
Counter
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communication service
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Ethernet router
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number of optional modules
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6 (Ethernet, Modbus, Modbus Plus, Profibus DP, Sy/Max)
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maximum number of connections
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1 USB
2 AS-Interface - distributed
4 AS-Interface - remote
6 Ethernet TCP/IP - local
6 Modbus Plus - local
6 Profibus DP - local
1 Modbus (RS232/485 Modbus/ASCII)
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integrated connection type
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1 Modbus Plus with
1 Modbus with
1 USB with
1 optic fibre with Hot Standby
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checks
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Process control
Hot standby
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memory description
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Expandable 7168 kB - program with PCMCIA card
Expandable 8 MB - file storage with PCMCIA card
Internal RAM 1024 kB - 512 kB for data
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switch function
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Key switch memory port on/off
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application structure
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1 periodic fast task - forbidden in Hot Standby application
128 I/O interrupt tasks - forbidden in Hot Standby application
128 interrupt tasks - forbidden in Hot Standby application
32 timer interrupt tasks - forbidden in Hot Standby application
4 auxiliary tasks - forbidden in Hot Standby application
1 cyclic/periodic master task -
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number of instructions per ms
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10.28 Kinst/ms 100 % Boolean
10.07 Kinst/ms 65 % Boolean and 35 % numerical
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system overhead
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0.2 ms for fast task
1 ms for master task
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bus current requirement
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2500 mA
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local signalling
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1 LED (green)Ethernet activity (COM):
1 LED (red)Ethernet collision:
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electrical connection
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1 female connector, connector type: SUB-D 9 for connecting to the Modbus Plus network
1 connector, connector type: RJ45 for connecting Modbus bus
1 connector, connector type: MT-RJ (multimode fiber optic) for interconnecting primary and secondary PLCs up to 4 km
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