Siemens CP-8000 User Manual page 123

·
Special Functions
─ SICAM FCM "parameter loading" (SICAM FCM V2.00, V2.10, V2.20, V2.30)
─ SICAM FCM "firmware loading" (SICAM FCM >=V2.00)
·
Engineering
─ TOOLBOX II + OPM
─ Web engineering
___
1)
this specification refers to the max. number of possible stations for MODBUS Master in SICAM
RTUs (per communication interface); due to performance and required response time, in most cas-
es only a few stations are possible (typ. 20-30); the MODBUS protocol itself defines a max. possible
number of 247 stations per line
2)
broadcast addressing is only restricted supported by Master
external converters (V.24/V.28 ↔ V.11) are required in some cases
3)
Substation
·
Serial communication according to Modicon MODBUS
MODST0 is substation
·
MODBUS protocol – half duplex link transmission procedure
─ MODBUS RTU-Mode
─ MODBUS ASCII-Mode
·
Max. connections: 1
·
Message protection
─ CRC16 + parity (optional) "RTU-Mode"
─ LRC + parity (optional) "ASCII-Mode"
·
Network Configurations
─ Point-to-point
─ Multiple point-to-point (extra interface required for each point-to-point configuration)
─ Multipoint-partyline
─ Multipoint-star
─ Data concentrator
·
MODBUS Slave address 0 "broadcast"
·
MODBUS Slave addresses 1...247
·
Physical interface
─ RS-232 - unbalanced interface according V.24/V.28 standard
─ RS-485 - balanced interface according V.11 standard
─ RS-422 - balanced interface according V.11 standard
─ Transmission line (half duplex)
·
Interoperability according to the following documents:
─ SICAM RTUs MODBUS Interoperability (DC0-073-2)
·
Clock synchronization for selected MODBUS Slave devices
─ Clock synchronization for OMV
·
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!
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
DC8-037-2.02, Edition 10.2017
1)
System Components and Technical Data
2)
2)
Unrestricted
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