Siemens CP-8021 User Manual

System Components and Technical Data
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted 131
DC8-037-2.02, Edition 10.2017
5.5.11 ST1ST0
5.5.11.1 Functions
Communication of a central station with one or more substations.
• Unbalanced multi-point traffic according to Siemens SINAUT ST1 (TIM 11)
ST1ST0 is substation
─ Data acquisition by polling (station interrogation)
─ Acquisition of events (transmission of data ready to be sent)
─ General interrogation, substation interrogation
─ Command transmission
─ Transmission of integrated totals
• Physical interface
─ RS-232 – unbalanced interface according to V.24/V.28
─ RS-485 – balanced interface according to V.11
• Supported functionality according to
Siemens SINAUT ST1 (TIM 11)
Protocol definition (with restrictions)
• Optimized parameters for selected transmission facilities
• Message conversion
─ IEC60870-5-101 <-> Siemens SINAUT ST1 (TIM11)
Note
The previously mentioned functions are described in detail in the document SICAM RTUs ▪ Ax 1703
Common Functions SIEMENS SINAUT-ST1 GV-S.
5.5.11.2 Operating Modes
Operating mode Interface →
optional DTE
Interface signals
Unbalanced interchange circuit
(V.24/V.28) RS-232 asynchronous
X2 RXD, TXD, CTS
1)
, RTS, DCD, DTR,
DSR/VCC, GND
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
X3 TXD+/RXD+, TXD-/RXD- (2-wire)
TXD+, TXD-, RXD+, RXD- (4-wire)
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
X2 → CM-0829
(CM-0819
2)
)
RXD, TXD, CTS, RTS, DCD, DTR,
DSR/VCC, GND (to CM-08x9)
Optical interface (multimode fibre optic)
ring
X2 → CM-0821 RXD, TXD, CTS, RTS, DCD, DTR,
DSR/VCC, GND (to CM-0821)
Unbalanced interchange circuit
(V.24/V.28) RS-232 asynchronous
X6
3)
RXD, TXD, CTS, RTS, DCD, DTR,
DSR, GND
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
X6
3)
TXD+/RXD+, TXD-/RXD- (2-wire)
TXD+, TXD-, RXD+, RXD- (4-wire)
1)
not usable (reserved for SICAM TOOLBOX II)
2)
RS-422 not supported
3)
only CP-8022 (switchable mode via parameter)

Siemens CP-8021 Specifications

General

Brand	Siemens
Model	CP-8021
Category	Controller
Language	English