100/180 mm PAPERLESS GRAPHIC RECORDER: USER GUIDE
HA028910
Issue 13 Sep 16
User Guide
Page 164
4.3.16 MASTER COMMS (Cont.)
USER DEFINED REGISTERS
As previously mentioned, ‘User Defi ned’ can be selected for all slaves and for some slave types it is the
only way of accessing some or all parameters.
The number of the register holding the required parameter is to be found in the user documentation sup-
plied with the slave. For instance, if the unit to which this manual refers, were to be a slave, then the list
of registers is to be found in
section 8
. For example, for this instrument, to determine what type of alarm,
alarm 1 on channel 2 is,
register 396
would be used, and the expected value would be 0 for Absolute
low, 1 for absolute high, 2 for Deviation in, 3 for Deviation out, 4 for Rate-of-change high or 5 for Rate-of-
Change low.
Figure 4.3.16g Confi guration page for user defi ned parameters
Channel Number
Value
Input Type
Slave
Digital
Parameter
Function Code
Register
Data Type
Scaling
Decimal Places
Process Value
PV Format
Span Low
Span High
Zone Low
Zone High
Decimal digits
UInteger (16 Bit)
Unadjusted
Select required slave
Decimal Places
0
1
0
100
1) Read 1
0.0400
Master Comms
1) Furn1 Recorder2
User Defined
Select required slave parameter
Select iteration rate for
continuous parameters
Units
Units
%
%
Read holding registers (3)
2
Medium Priority
Numeric
Select 'None' or 'Decimal Places'
Select Data Type
Select Function Code
Enter No. of decimal point shifts
396
Enter required register number (decimal)
Reflects descriptor, once the
Apply key has been operated.
4
Discard
Apply
