Basic Circuit Diagram Of The Bm 143-Desina Rs485 Basic Module - Siemens SIMATIC ET 200X Manual

Table 7-15 Pinout of sockets X2, X4, X6 and X8 for digital inputs or outputs
Pin Assignment
of socket X2
1 Non-switched supply voltage DC 24V-NS
2 Diagnostics
input or input
with NC
functionality
3 Chassis ground, power supply
4* Digital input or
output
(DESINA)
channel 1
5 not assigned
* If it is parameterized as a digital output, pin 4 is fed by the DC 24V-NS non-switched supply voltage.
Covering up unused connections
You must seal off any connections which are not required with M12 screw caps, in
order to ensure that the degree of protection (IP 65, IP 66 or IP 67) is achieved.
Basic circuit diagram
The basic circuit diagram of the basic module is shown below.
DESINA
DC 24 V-NS
connector
A
5 2 1
X01
6 3 4
B
DC 24 V-S
B
6 3 4
X02
5 2 1
A
Figure 7-6

Basic circuit diagram of the BM 143-DESINA RS485 basic module

ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Assignment Assignment
of socket X4 of socket X6
Diagnostics Diagnostics
input or input input or input
with NC with NC
functionality functionality
Digital input or Digital input or
output output
(DESINA) (DESINA)
channel 3 channel 5
Internal power
RS 485
interface
DC 24V-S
(for digital outputs)
Load voltage
DC 24 V-S
monitor
Technical Specifications
Assignment
of socket X8
Diagnostics
input or input
with NC
functionality
Digital input or
output
(DESINA)
channel 7
DC 24 V-NS RUN
Electronic
supply
components
Backplane bus
Parameterizable digital inputs
and outputs
X1 X3 X5 X7 X2 X4 X6 X8
Front view of
socket
(Front view)
2 2
1 1 5 5 3
4
PROFIBUS
SF
address
DC 24 V-NS
7-29