User manual - INDICATOR TRS-10a
6.1.
LIST OF REGISTERS
Register Write
Range
Register description
01h
Yes
depending on
display mode
Decimal mode
: displayed value; range : -999 ÷ 9999;
Byte mode
: driving of decades 0 and 1; range: 0h - FFFFh
02h
Yes
depending on
display mode
Decimal mode
:
lower byte - decimal point position, defines which decade displays
decimal point; range : 0 ÷ 3;
higher byte - displaying status, allows to signalise system errors,
displaying predefined warnings (see: Tab. 5.2),
range: 00h, 2Xh, 4Xh, 8Xh
Byte mode
: driving of decades 2 and 3; range: 0h - FFFFh
03h
Yes
00h, 1Xh,
2Xh, 4Xh,
8Xh, FXh
Decimal mode
:
lower byte - displaying status - physical copy of higher byte of 02h
register
higher byte: always 0
Byte mode
: always 0, can not be written
04h
Yes
100h -
FFFFh
Refresh period
05h
Yes
00h, 01h
Operation mode
20h
Yes
0h ÷ FFh
Device address
New modules has default address = 0xFE
21h
No
006Ah
Device identification code (ID)
0FFF0h
0FFF1h
No
see descr.
Unique serial number
0FFF2h
No
006A6Ah
Device identification code (ID)
0FFF3h
No
see descr.
Firmware version
0FFF4h
No
see descr.
Build number
•
After writing to register no 20h the device responds with an “old” address in
the message.
•
If register 20h is being written it is possible to use BROADCAST frame (with
address 00). This operation causes changing of addresses of all modules
connected to the RS-485 network. Modules receive and interprets
BROADCAST frames, but do not transmit answers.
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