Siemens Simatic S7-300 CP 341 User Manual page 214

Technical Specifications
A.1 Technical Specifications of the CP 341
Technical specifications
Transmission rate with ASCII driver
Transmission rate with printer driver
Character frame
Quantity of user data transported per program
cycle
Memory requirement of FB P_SND_RK and FB
P_RCV_RK (RAM)
Technical specifications for the RS 232C interface
The table below shows the technical specifications for the RS 232C interface of the CP 341–
RS 232C:
Table A- 2
Technical specifications
Interface
RS 232C signals
Max. transmission distance
Max. baud rate
Technical specifications for the 20mA-TTY interface
The table below shows the technical specifications for the 20-mA-TTY interface of the
CP 341-20mA-TTY:
Table A- 3
Technical specifications
Interface
TTY signals
Max. transmission distance
Max. baud rate
214
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Technical specifications of the RS 232C interface
RS 232C, 9-pin sub D male connector
TXD, RXD, RTS, CTS, DTR, DSR, RI, DCD, GND
All electrically isolated relative to the S7-internal supply
(backplane bus) and the external 24 V DC supply
15 m
115200 baud
Technical specifications for the 20mA-TTY interface
20 mA current loop TTY, 9-pin sub D female connector
Two isolated 20 mA current sources,
receive loop (RX) "–" and "+" send loop (TX) "–" and "+"
All electrically isolated relative to the S7-internal supply (backplane
bus) and the external 24 V DC supply
1000 m active, 1000 m passive
19200 baud
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
57600, 76800, 115200 bps
300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
57600, 76800, 115200 bps
• No. of bits per character (7 or 8)
No. of start/stop bits (1 or 2)
•
• Parity (none, even, odd)
Send/receive: 32 bytes
Approx. 5500 bytes
Manual, 09/2008, A5E02191071-01
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