LumaSense technologies ISR 320, Руководство пользователя

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ISR 320 Manual Controls and Installation
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3.1.2 Connecting the Pyrometer to a PC
The pyrometer is equipped with an RS485 serial interface. With the RS485, long transmission
distances can be realized and the transmission is largely free of problems. The RS485 also allows
several pyrometers to be connected in a bus system.
If an RS485 connection is not available at the PC, it can be accomplished using the RS485 to USB
connector. When using a RS485 to USB adapter, make sure that the adapter is fast enough to
receive the pyrometer’s answer to an instruction of the master. Most of the commonly used
adapters are too slow for fast measuring equipment, so it is recommended to use the
RS485  USB converter “USB nano“(ref. no. 3 852 600).
3.1.3 Connection to RS485
Half-duplex mode: A1 and A2 as well as B1 and B2 are bridged in the 8-pin round connector of
the connecting cable, to prevent reflections due to long stubs.
RS485 Bus System
It also safeguards against the interruption of the RS485 Bus System should a connecting plug be
pulled out. The master labels mark the connections on the RS485 converter. The transmission
rate of the serial interface in Baud (Bd) is dependent on the length of the cable. Values between
1200 and 115200 Bd may be set.
3.1.4 Connection Schematic for Analyzing Devices
For temperature indication of the pyrometer, LumaSense offers pure indicators (series DA 4000).
LumaSense also offers indicators with features to change pyrometer parameters (DA 6000 and
DA 6000-N) as well as a fast digital PID controller PI 6000.
Digital Display Parameterizing Indicator Digital Controller
Additional analyzing instruments, including LED digital displays only need to be connected to a
power supply and the analog outputs of the pyrometer (exception: the digital display DA 6000
1
7
6
5
2
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8
1
7
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5
1
3
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1
7
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A
B
B1
A2
B2
A1
B1
A2
B2
A1
A2 B2
A1
B1
Master
Pyrometer 1
e.g. address 00
Pyrometer 2
e.g. address 01
Pyrometer 32
e.g. address 31
Terminator
120 Ohm
S
GRND GRND GRND