Page 1
Supplement to the
Operation Manual
signo 723.1
signo 727.1
Variable Preset Counter
Position Indicator
RS485 / RS232 Protocol Hengstler TP3
This description is a supplement to the manual
2 723 093
signo 727.1).
It contains the feature description of the interface
options for the counters. It also contains hints
required for the installation and connection of a
counter to an RS 485 bus or to RS 232.
Ordering information
Interface-
option
RS 485 12..24
RS 485 115..230 VAC 0 723 161M3 0 727 161M3 0 723 169
RS 232 12..24 VDC 0 723 150M3 0 727 150M3 0 723 150M1
RS 232 115..230 VAC 0 723 151M3 0 727 151M3 0 723 151M1
Power-supply Ordering code
signo 723*
VDC 0 723 160M3 0 727 160M3 0 723 169
Ordering code
signo 727*
(for signo 723.1) and
Ordering code
RTC**
2 727 033
Ordering code
signo 723Print***
(for
* This ordering code characterizes the interface protocol option TP3.
** An RTC is required when connecting one or more counters to an RS 485 bus.
*** 723Print with only Write-function and baudrate 4800 Baud. (See also 2 723 085)
Interface parameters
Two interface parameters have been added to
Parameter Display Alternatives Meaning
Baud Rate
Bus Address
* Factory set, compare F30
Please set
stop bits cannot be changed (see technical data on next page).
$UWLFOH 1R 5HY
'F14' 1.2
'F19' 0
F14
and
2.4
4.8 *
1
...
31
F19
according to the values of your network configuration. The settings for data, parity and
service level 3:
1200 baud
2400 baud
4800 baud
Interface deactivated
physical address 1
...
physical address 31
Page 2
Connection to RS 485
Up to 31 counters can be connected together to form a bus. Each counter must have a unique bus address
(parameter
controlled by by the
Please determine a unique bus address for each counter (1..31) and note it down. The RS 485 bus must be
terminated on both ends with a resistor of 560 Ohm each. You can use a wire wound resistor (for instance 0,25
W).
F19
). Communication between PC and the counters runs through the bus converter RTC and is
Hengstler Terminal Server
program by means of the protocol
Hengstler TP3
.
Buscable
Back o f signo 72 3/727
Bus Cable
Termination
Back of sig n o 723/ 727
B
A
18 171920
B
A
B
A
560 Ohm
Connection line: Twisted and shielded; shielding to
terminal 19
Connections A/B
Input resistance. typ. 12 kOhm
Input amplitude max.
±
-7..+12V
Output level typ. High: 3,5V, Low: 1,3V
Output current max.
±
60mA
Data Transfer
Baud Rate 1200, 2400, 4800 Baud
Data format
7 data bits, even parity, 1 stop bit
Protocol Hengstler TP3
Noise immunity: Data transfer may be disturbed
temporarily by EMC, which is recognised
and automatically repeated by the
protocol
18 171920
Technical Data RS 485
Connection to RS 232
You can connect a single counter with RS 232 directly to a modem or to a PC. With
address which is used by the
Hengstler Terminal Server
program.
Technical Data RS 232
RS232
Gnd TxD
RxD
Max. length of line: 15m
Input RxD
Input resistance typ. 5 kOhm
Input voltage max.
±
30V
Output TxD
Back of si gno 723/727
18 171920
Output current max.
Data Transfer
Output voltage typ.
±
8V
±
20mA
see RS 485
All other technical data are in accordance with chapter 6 of the underlying operation manual.
Upon counter overflow an appropriate message appears in the display. For safety reasons the serial
interface is locked out until the counter has been reset manually.
F19
you set the counter's
$UWLFOH 1R 5HY
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