Basler DECS-250 - Page 199

9440300990 22-3
DECS-250 Communication
Figure 22-3. Typical RS-485 Connections
RS-485 port communication settings are illustrated in Figure 22-4 and consist of the baud rate, number of
bits per character, parity, and the number of stop bits.
Figure 22-4. RS-485 Port Communication Settings
Ethernet Port
An Ethernet port uses the Modbus TCP protocol for polled communication with other networked devices
or remote annunciation and control with an IDP-801 Interactive Display Panel.
CAN Communication
BESTCOMSPlus Navigation Path: Settings Explorer, Communications, CAN Bus, CAN Bus Setup
HMI Navigation Path: Settings, Communications, CAN Bus, CAN Bus Setup
One CAN (controller area network) interface (CAN 1) facilitates communication between the DECS-250
and optional modules such as the contact expansion module (CEM-2020) and analog expansion module
(AEM-2020).
P0063-03
22
6
4
A
B
C
TO DECS-250
TO RS-422/RS-485
DB-37 FEMALE
19
24
C
B
A
A
B
C
4000 ft
1219.2 m
maximum
DECS-250
RS485
R
t
t
R
R = Optional terminating resistor
120 ohms, typical
t
DECS-250
RS485
DECS-250
RS485