4.5
RS232 interface
4.5.1
Cable and interface test RS232
Computer
Thermostat
Signal
9-pin Sub-D female con-
nector
25-pin Sub-D female
connector
9-pin Sub-D female con-
nector
Signal
with hard-
ware hand-
shake
without
hardware
handshake
with hard-
ware hand-
shake
without
hardware
handshake
with hard-
ware hand-
shake
without
hardware
handshake
RxD
2
2
3
3
2
2
TxD
TxD
3
3
2
2
3
3
RxD
DTR
4
20
4
DSR
Signal
Ground
5
5
7
7
5
5
Signal
Ground
DSR
6
6
6
DTR
RTS
7
4
7
CTS
CTS
8
5
8
RTS
Note the following:
With hardware handshake: Use a straight-through and not a
null modem cable for connecting a thermostat to the PC. The
RS232 interface can be connected directly to the PC using a
straight-through cable.
Without hardware handshake: Set the corresponding operating
mode on the PC. Use shielded connection cables. Connect
shield to connector case. The cables must be galvanically iso-
lated from the rest of the electronics. Do not connect unas-
signed pins.
The RS232 interface can be easily checked on a connected
PC with the Microsoft Windows operating system. Using the
HyperTerminal program for Windows
®
95/98/NT/XP.
Starting with Windows Vista, HyperTerminal is no longer
an integral part of Windows. However, it is possible to
purchase and download the program. Alternatively,
there are also free Open Source terminal programs
such as putty with a similar range of functions.
4.6
Alarm output 12N
Function
Description
Alarm output
--
Alarm and standby
for on-site return flow protection
Available functions
Before commissioning
Microcool
30
Содержание MC 1200
Страница 39: ...Fig 12 Menu Operation Microcool 39 ...
Страница 56: ...Indication on the display Description NTC sensor break NTC short circuit Faults Microcool 56 ...
Страница 67: ......
Страница 68: ......
Страница 70: ......
Страница 71: ......