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A5.2
Control and data interfaces
A5.2.1
CTRL/DATA/TTL/Relay interface
The CTRL/DATA interface is used for the configuration and operation of the RTS SIP-
ISDN System via a PC. To connect a PC you need a 1:1 connecting cable in which Pin
2 and Pin 3 are not crossed. Furthermore, Pin 5 GND must be connected.
Additionally, two further data interfaces for transparent data transmission are imple-
mented by this interface. The two interfaces can be independently configured by software
either as RS485 or as RS232 interface.
NOTE
Please note that the function - input or output - of the Pins RXD1/2 and TXD1/2 are
determined by the interface type DCE or DTE. The labelling of the Pin is always
RXD for Pin 2 and TXD for Pin 3.
For both data interfaces RXD serves always as receive path and TDX serves always
as transmit path.
TAB. 4
8
1
15
9
Socket: SUB-D 15 pole
Pin
Signal
1
RXD2
2
RXD1
3
TXD1
4
TXD2
5
GND
6
RELAY 1 (A)
7
RELAY 1 (B)
8
RELAY 2 (A)
9
TTL1
10
TTL2
11
TTL3
12
TTL4
13
TTL5
14
TTL6
15
RELAY 2 (B)
a.
ATTENTION: on this Pin the RTS SIP-ISDN transmits data
b.
E-A: input and output at RS485 (bus interface)
c.
DCE = Data Communication Equipment
d.
ATTENTION: on this Pin the RTS SIP-ISDN receives data
PIN ASSIGNMENT: CTRL/DATA/TTL/RELAY INTERFACE
Direction
a
RS232/RS485 Data (a)
output/E-A
a.
RS232/RS485 Data (a)
output/E-A
d
RS232/RS485 Data (b)
input/E-A
d.
RS232/RS485 Data (b)
input/E-A
output
output
output
input/output
input/output
input/output
input/output
input/output
input/output
output
Electrical characteristics
b
PC interfaceRS232:
c
b.
Type (Pin 2, 3):
DCE
Level:
V.24
b.
Data rate:
max. 115200 Baud
Range:
max. 15 m
b.
Protocol:
1 start bit
8 data bit
1 stop bit
RS232/RS485 data interface:
Level:
V.24 (RS232)
V.11 (RS485)
Data rate:
max. 115200 Baud
Range:
max 15m (RS232)
max. 100 m (RS485)
Protocol:
1 start bit
8 data bit
1/2 stop bit
Parity adjustable
TTL interface:
Capacity of the TTL outputs:
Maximum voltage: 5V
Maximum current: 10mA
Relay interface:
Capacity of the relays:
Maximum voltage: 48V
Maximum current: 200mA
87
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