Siemens SIMATIC S5-95F Manual page 526

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S5-95F
CP 521 SI Communications Processor
Battery
TXD
3,4 V
RXD
850 mAh
RTS
BATT
CP 521 SI
SERIAL INTERFACE
6ES5 521-8MA21
1
2
3
4
5
6
V.24
TTY
1
3
2
4
EWA 4NEB 812 6210-02
6
+9 V
GND
Data
module
5
7
9
6
8
10
Technical Specifications
Galvanic isolation
Memory submodule
Serial interface
Transmission
Transmission rate
Permissible cable length
- V.24
- TTY
LED displays
- TxD (green)
- RxD (green)
- RTS (green)
- BATT (yellow)
Back-up battery
Lithium 1/2 AA
Current consumption
from +9 V
typ. 140 mA
Power loss of module
typ. 1.2 W
Weight
approx. 500 g (19.3 oz.)
EMC Characteristics for Use in S5-95F
Electrostatic discharge
to IEC 801-2
tested with
Electromagnetic fields
to IEC 801-3
tested with
Fast transient burst
to IEC 801-4
tested with
Module Spectrum
(6ES5 521-8MA21)
TTY signals are
isolated
EPROM/EEPROM
V.24/TTY passive
(active)
Asynchronous
10-bit character frame/
11-bit character frame
110 to 9600 baud
15 m
Results from:
(voltage drop on
cable)+
(receiver-typ. voltage
drop 1.5 V) or
(transmitter-typ. voltage
drop 0.9 V)
max. 1000 m (?? ft.)
Transmitting
Receiving
Ready to send
Battery failure
3.6 V/850 mAh
Severity rating: none
4 kV air discharge
<2 kV contact
discharge
Severity rating 2
3 V / m
Severity rating 3
1 kV on signal lines
A-31

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