Dnpmt0, Dnpst0; Functions; Operating Modes - Siemens CP-8000 User Manual

System Components and Technical Data
5.5.9

DNPMT0, DNPST0

5.5.9.1

Functions

Communication between one central station and one or several substations.
·
Unbalanced multi-point traffic according to DNP3
DNPMT0 is central station, DNPST0 is substation
─ Data acquisition by polling (station interrogation, register interrogation)
─ Acquisition of events (transmission of data ready to be sent, unsolicited responses)
─ General interrogation, outstation interrogation
─ Command transmission
─ Transmission of integrated totals
·
Max. connections (number of supported DNP Slaves): 100
·
Physical interface
─ RS-232 – unbalanced interface according to V.24/V.28
─ RS-485 – balanced interface according to V.11
·
Supported functionality according to the following document:
─ SICAM RTUs DNP3 Interoperability (DC0-046-2)
·
Optimized parameters for selected transmission facilities
·
Functions for supporting redundant communication routes
·
Special functions
______
*)
because of performance, required response time and limited storage capacity max. 20
Note
The previously mentioned functions are described in detail in the document SICAM RTUs ▪ Ax 1703
Common Functions DNP3.
5.5.9.2

Operating Modes

Operating mode
Unbalanced interchange circuit
(V.24/V.28) RS-232 asynchronous
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
Optical interface (multimode fibre optic)
ring
Unbalanced interchange circuit
(V.24/V.28) RS-232 asynchronous
Balanced interface (V.11) RS-485 (2-wire)/
RS-422 (4-wire) asynchronous
1)
not usable (reserved for SICAM TOOLBOX II)
2)
RS-422 not supported
3)
only CP-8022 (switchable mode via parameter)
126
Unrestricted
*)
Interface →
Interface signals
optional DTE
X2 RXD, TXD, CTS
DSR/VCC, GND
X3 TXD+/RXD+, TXD-/RXD- (2-wire)
TXD+, TXD-, RXD+, RXD- (4-wire)
X2 → CM-0829
RXD, TXD, CTS, RTS, DCD, DTR,
2)
(CM-0819 ) DSR/VCC, GND (to CM-08x9)
X2 → CM-0821
RXD, TXD, CTS, RTS, DCD, DTR,
DSR/VCC, GND (to CM-0821)
3)
X6 RXD, TXD, CTS, RTS, DCD, DTR,
DSR, GND
3)
X6 TXD+/RXD+, TXD-/RXD- (2-wire)
TXD+, TXD-, RXD+, RXD- (4-wire)
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
DC8-037-2.02, Edition 10.2017
1)
, RTS, DCD, DTR,