System Components and Technical Data
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted 119
DC8-037-2.02, Edition 10.2017
5.5.7 COUMT0
5.5.7.1 Functions
Communication of a central station with up to 10 counter devices.
• Serial communication protocol according to IEC 62056-21 (IEC 61107)
COUMT0 is central station
• Network configuration
─ Multipoint partyline
─ Multipoint star
• Max. connections: 10
• System or device (application function)
─ Controlling station
• Physical layer/data flow control
─ Unbalanced interchange circuit according to V.24/V.28 standard
─ Transmission medium (half duplex)
─ Byte Frame (8E1)
─ Data flow control bit in receive direction
─ Data flow control bit supervision
• Interoperability according to IEC 60870-5-101 Ed. 1
• Interoperability according to the following document:
─ SICAM RTUs IEC 60870-5-104 Interoperability (DC0-013-2)
• Data acquisition by polling (station interrogation)
─ Continuous interrogation of a remote terminal unit
─ Station failure delay
• Acquisition of events
• General interrogation, substation interrogation
• Clock synchronization according to IEC 60870-5-101
─ Clock synchronization with <TI:=103> clock synchronization command
─ Acquisition of transmission delay (primary station) used for correction of clock syn-
chronization (with “request status of link” = proprietary)
• Command transmission
─ Demand
─ Set control location
─ Check control location
• Transmission of integrated totals
─ IEC 62056-21 (IEC 61107) Mode-C
─ EDIS data coding (EDIS = Energy Data Identification System)
─ OBIS data coding (OBIS = Objekt Identification System)
• Optimized parameters for selected transmission facilities
─ 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!
• Standby transmission line over the public telephone network (PSTN)
• Data transmission using time slot radio
• Co-ordination of several masters
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