M
ODEL
ATS1741
⑥
①
English
RS232 to RS485 Interface
M
OUNTING THE UNIT
The board has a standard Aritech 'B' size footprint, mountable in existing
Aritech metalwork.
C
ONNECTIONS
J2
+12 V
12 VDC supply input. 100 mA maximum.
0 V
Negative supply.
D+
Positive data connection of the RS485 databus
.
D-
Negative data connection of the RS485 databus
.
Units can be up to 1.5 km from the 4-door DGP or control
panel, depending on the type of cable used. Recommended
cable is Belden 8723; 2-pair twisted, shielded, data cable.
C
ONNECTIONS
J1
TX
RS232 data transmit.
RX
RS232 data receive.
CTS
Clear to send.
RTS
Request to send.
GND
Isolated RS232 ground.
LED
S
TX LED
LED flashes to indicate data is being received in as RS232
and
transmitted out as RS485.
RX LED
LED flashes to indicate data is being received in as RS485 and
transmitted out as RS232.
E
XTENDED DISTANCES BETWEEN
T
ITAN AND
ATS1801
ATS1741 (RS485 to RS232 interface) to PC
ATS1741 (RS232)
PC (RS232)
Pin Names
Pin Names
DB25
DB9
TX RX 3
2
RX TX 2
3
*CTS *Not
connected 6,8,20
1,4,6
*RTS *Not
connected
-
-
GND GND 7
5
*Link RTS-CTS
*Link RTS-CTS
4-5
7-8
ATS1741 (RS485 to RS232 interface) - ATS1741 (RS485 to RS232 interface)
ATS1741 (RS485) ATS1741 (RS485)
Remarks
+12 V
+12 V
0 V
0V
Connect to a 12 VDC power supply
D+ D+
D- D-
!
Do not power the ATS1741 from different power supplies unless
you disconnect the +12 V wiring between those units. Ensure the
power supplies are isolated, especially the GND.
ATS1741 (RS485 to RS232 interface)- ATS1801 (Computer/Printer
interface)
ATS1741 (RS232)
ATS1801 Port Computer
TX RxD
RX TxD
CTS* *Not
connected
RTS* Not
connected
GND GND
*Link RTS-CTS
*+12 V on CTS
D
ATA BUS
S
YSTEM
V
IA
M
ODEM
The shield of each length of data cable is only connected to earth at one end.
The connections between ATS1741 and the modem are as follows:
ATS 1741
Modem
DB25
DB9
TX RX
Pin2
Pin3
RX TX
Pin3
Pin2
RTS CTS
Pin5
Pin8
CTS RTS
Pin4
Pin7
GND GND
Pin7
Pin5
L
INKS
T
ERM
Refer to the control panel installation guide.
E
ARTH
①
1
105066
г
.
Москва
,
ул
.
Спартаковская
,
д
.11,
корп
. 1,
тел
. (095) 787-33-42, (095) 937-90-57;
факс
(095) 937-90-55