Communication, Serial communication – Basler Electric IDP-800 User Manual

Page 9

9437600990 Rev F

Communication

Data and commands can be exchanged between the IDP-800 and DECS-200, DECS-200N, DECS-250,
DECS-250N, or DECS-400 using serial communication. In addition to serial communication, the DECS-
400 has the added capability of Ethernet communication with the IDP-800. When connected to an
Ethernet LAN, the display can be polled via Modbus to acquire data collected by the DECS-400
connected to the IDP-800.

DECS and IDP-800 communication applications are summarized in Table 1.

Table 1. DECS and IDP-800 Communication Applications

Controller Application

[Communication Method]

{Communication Scheme}

Local Only

Remote

Only

Local and

Remote †

DCS

∗

DECS-200
[Serial, RS-485]
{Figure 2}

YES

N/A

YES

DECS-200N
[Serial, RS-485]
{Figure 2}

YES

N/A

YES

DECS-250
[Serial, RS-485]
{Figure 2}

YES

N/A

YES

DECS-250N
[Serial, RS-485]
{Figure 2}

YES

N/A

YES

DECS-400
[Serial, RS-485]
{Figure 2}

YES

N/A

DECS-400
[Ethernet] ‡
{Figure 3}

YES

∗ Distributed Control System (DCS) interface offers pass-through communication to/from the

DECS-200, DECS-200N, DECS-250, or DECS-250N via the IDP-800 Ethernet port.

† Requires two IDP-800 display panels.
‡ Requires a multi-port Ethernet switch between an IDP-800 and single- or dual-DECS-400

controllers. An open port on the switch enables external (DCS) control and monitoring
communication between the IDP-800 and DECS-400.

Serial Communication

When the IDP-800 will be communicating with a DECS using RS-485 serial communication, the DECS
communication settings should be configured as follows:

•

Baud: 9600

•

Data length: 8

•

Parity: None

•

Stop bits: 2

•

Single DECS address: 247

•

Dual DECS address: 247 (DECS-A) and 246 (DECS-B)

IDP-800

Communication