User manual - DATA RECORDER SRD-99 and cooperating software
Register Write
Range
Register description
Register from 110h to 11Dh
Parameters in “
Outputs settings
” submenu for output 2; registry
description like for output 1 (see registers 100h to 10Dh).
1
- if the measurement result exceeds the allowable measurement range defined by "
Hi value
", "
Lo value
" and
“
Upper ext.
”, “
Lower ext.
” parameters then 01h ÷ 08h registries shall contain limit values for the allowable range.
Exceeding the allowable measurement range shall be signalled by setting appropriate bits of the 09h registry.
2
- after writing registry 20h the unit replies with the frame starting from the old (unchanged) address
3
- after writing registry 22h the unit replies with the frame sent according to the new baud rate
4
- status of “
Triggering
” parameter in “
RS485 port settings
” submenu also relates to the writing of this parameter;
therefore it is possible to block writing of all registries using the RS-485 port, but unblocking can be made only
through the device's menu.
9.2.
TRANSMISSION ERRORS HANDLING
If during reading or writing one of registries an error occurs then the unit shall return the frame
containing the error code (according to the Modbus protocol, see: example No. 5, page
Error codes should be interpreted as follows:
01h
- illegal function (only functions 03h, 06h and 10h are available),
02h
- illegal register address
03h
- illegal data value
08h
- no write permission (see: “
Config change
” parameter in the “
RS485 port settings
”
menu)
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