Unit description
8
3.5.2
RS 485 Interface
Connecting cable:
Thermostat
9-pin sub-D-socket
pin
Data
1
Data A
5
SG (Signal Ground)
optional
6
Data B
☞
−
Use screened connecting cables.
−
Connect the screen to the plug case.
−
The lines are electrically isolated from the remaining electronics.
−
Unoccupied pins must not be connected!
The
RS 485
bus absolutely needs a bus termination in form of a terminating network which ensures a
defined unattended time in the high-resistance phases. The bus terminal is defined as follows
:
Generally this network is integrated on the plug-in card of the computer (RS 485).
Protocol:
☞
−
The interface operates with 1 stop bit, no parity bit and 8 data bits.
−
Transfer rate either 2400, 4800, 9600 (factory setting) or 19200 baud as selected.
−
The RS485 commands are always preceded by the device address. There is
provision for 127 addresses. The address must always have 3 digits. (A000_... to
A127_...).
−
The command from the computer must be terminated with CR.
Summary of Contents for Ecoline E 200
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Page 8: ...Brief operating instructions 2 ...
Page 53: ...Circuit diagram 14 04 99 YAEE0013 47 11 Circuit diagram ...
