Siemens CP-8021

System Components and Technical Data
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual Unrestricted 101
DC8-037-2.02, Edition 10.2017
• Special functions
─ Summer time bit (SU) = 0 for all messages in transmit direction (summer time bit in
time tag)
─ Day of week (DOW) = 0 for all messages in transmit direction (day of week time tag)
─ Originator address = 0 for all messages in transmit direction
─ Send GI-data as class 1 data
─ Non interruptible GI
─ Convert general interrogation command to BROADCAST in receive direction
─ Do not store general interrogation commands in receive direction
─ Send End of init message as class 1 data
─ Send ACTCON, ACTTERM message as class 1 data
─ Send ACTCON for clock synchronization command
─ Emulate ACTCON+/-
─ Emulate ACTCON, ACTTERM for commands (with control message)
─ Message synchronization
─ Filtering of measured values with COT = 3 (spontaneous) in transmit direction
___
*)
with relay operation accuracy will be reduced 10 ms per routing station
Note
The previously mentioned functions are described in detail in the document SICAM SICAM RTUs • Ax
1703 Common Functions Protocol Elements, section “Multi-Point Traffic (UMP)”.
5.5.1.2 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)
Note
Details about realization of various operation modes are given in the manual SICAM SICAM RTUs Plat-
forms – Configuration Automation Units and Automation Networks.