Connecting The Rs485 Interface; Essernet  Micro Module - Honeywell ESSER essernet SEI1 Bedienungs- Und Installationsanleitung

10.2.2

Connecting the RS485 interface

Each SEI1 provides an integrated RS-485 interface as a factory standard.
Interface
module
Fig. 9: Terminal SIO 1
The RS485 interface condition is displayed with both LED (SI 01 red/yellow)
•
If the RS485 interface is used for data transmission between the main
network and the sub net, e.g. in remote operation, the symmetry resistors
may be activated at only one serial essernet
•
For activation of the symmetry resistors, close both solder bridges J8 + J9
(see Fig.9).
•
Max. line length 1000 m between the interface and the external equipment.
Observe permitted torque (max. 0.4 Nm) of the terminals!
10.3 essernet
In the serial essernet
devices, such as ESSER fire alarm control panels and management systems.
•
Only essernet
in one network!
•
Implement the essernet
special LAN protection devices.
FB 798819 / 05.18
J 9
J 8
RxD + (A)
RxD - (B)

micro module

interface, an essernet

modules using the same transmission rate may be combined

Serial essernet
RS485
®
interface.

module can be used for networking up to 31
surge protection or expanded EMC protection using
®
interface (SEI1)
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