System Components and Technical Data
100 Unrestricted SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
DC8-037-2.02, Edition 10.2017
Substation
• Serial communication protocol according to IEC60870-5-101
UMPST0 is substation
• Unbalanced transmission Slave
─ Network configuration
− Multipoint-partyline
− Multipoint-star
− Max. connections: 1
─ System or device (application function)
− Controlled station
• Physical layer / data flow control
─ Unbalanced interchange circuit according to V.24/V.28 standard
─ Transmission medium (half duplex)
─ Byte Frame (8E1)
• Interoperability according to IEC 60870-5-101 Ed.1
• Interoperability according to the following document:
─ SICAM RTUs Interoperability IEC 60870-5-101/104 (DC0-013-2)
• Acquisition of events (transmission of data ready to be sent)
• General interrogation, outstation interrogation
─ Non Interruptible GI
─ Send GI-data as class 1 data
─ Convert general interrogation command in receive direction to Broadcast
• Clock synchronization according to IEC 60870-5-101
─ Clock synchronization with <TI:=103> clock synchronization command
─ Acquisition of transmission delay (secondary station) used for correction of clock syn-
chronization with <TI:=106>
─ Correction of clock synchronization (via parameter)
─ Accuracy +/-20ms
─ Accuracy (relay operation) +/-20ms
*)
• File transfer
• Optimized parameters for selected transmission facilities (modems)
─ Predefined optimized parameters for selected transmission facilities
─ Free definable parameters for transmission facility
─ 5 V power supply for external modem
ATTENTION: check power consumption of external modem!
• Data transmission in relay operation mode (multi-point traffic with routing)
• Protocol element control and return information
─ Protocol element control messages
− Send (general) interrogation command to all
− I bit handling for time ON/OFF
─ Protocol element return information
− Status DTR (1 = state line active)
− Status DSR (1 = state line active)
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