Transmission Equipment; Ccitt-Specifications - Siemens MK7000 Manual

2.4

Transmission Equipment

2.4.1

CCITT-specifications

Building Technologies
Fire Safety & Security Products
The following specifications and parameter definitions provide the necessary
background information for project engineers and service technicians working with
DMS7000 Danger Management Systems
Equipment connections are based on the CCITT-V24 recommendations which
include all possible interface lines together with their functional descriptions.
However they do not specify which connections should be used for specific
applications.
In comparison with the CCITT-V24 recommendations, the CERBERUS
V24-interface has been greatly simplified, using only 7 of the recommended 22
connections.
Foreign modems which fulfill the following specification may also be used:
asynchronous full duplex
standard data transmission rate of 300, 600, 1200, 2400, 4800, 9600 Baud.
(Note: conversion to TTL-level via CERBERUS-Modem necessary)
Modem Header (TTL-Level!)
K1D 010 K1D 080
K1D 011 K1D 120
K1D 080
K1D 090
K1D 120
PIN A1 A2
1 +5V +5V
DC DC
2 NC NC
3 TxD1 TxD2
4 RxD1 RxD2
5 RTS1 RTS2
6 NC NC
7 GND GND
8 NC NC
9 DCD DCD
10 NC NC
11 NC NC
12 NC NC
13 CTS1 CTS2
14 NC NC
K1D 012 K1D 081 K1D 081
K1D 140 K1D 121
A1/2 A1/2 A2
+5V +5V +5V
DC DC
NC NC NC
TxD1 TxD1 TxD2
RxD1 RxD1 RxD2
NC RTS1 NC
NC NC NC
GND GND GND
+5V +5V NC
DC DC
NC NC
TxD2 NC
RxD2 NC
RTS2 NC
NC NC
GND NC
DC
Transmit Data
Receive Data
Clear Watch-Dog
Transmit Data
Receive Data
Ready to Send
Clear to Send
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