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GLDM 64.1 Technical Manual rev. 1.30 February
2020
Page 21 of 50
Mode 1 (FIR filter) Settings / Characteristics
FL
Settling
time to
0.1%
(ms)
3 dB Cut-
off
frequency
(Hz)
20 dB
damping
at freq.
(Hz)
40 dB
damping
at freq.
(Hz)
Damping
in the
stopband
(dB)
Stopband
(Hz)
Output rate*
(samples/s)
0
No
filtering
**
1221
1
23
40
98
130
>90
>163
1172
2
46
20
49
65
>90
>81
586
3
69
13
33
43
>90
>53
391
4
92
10
24
33
>90
>41
293
5
114
8
20
26
>90
>33
234
6
138
6.5
16
22
>90
>26
195
7
161
5.7
14
18
>90
>22
167
8
183
5
12
16
>90
>20
147
* Output rate = Table value/2
UR
samples/s
** Pre-filter 18 Hz
8.4.3. UR Update Rate and Averaging
[ SDO 2100 sub 11 ]
Depending on the selected filter mode this command defines an averaging for the output value. The permitted
settings are from 0 to 7 (see table below
). The average value is always calculated from
2
UR
measurement
values.
GLDM 64.1 allows for UR the following settings:
UR
0
1
2
3
4
5
6
7
Average of 2
UR
values
1
2
4
8
16
32
64
128
Check / Setup of the averaging:
Master (PC / SPS) sends
Slave (GLDM 64.1) responds
Meaning
UR
U+00003
Request: Averaging of 8 values
UR7
OK
Setup: Averaging of 128 values
WP
OK
Setup saved
Factory default:
0
6.5.
Taring and Zeroing Commands
– SZ, ZA, RZ, ST, RT, SP
The following commands allow you to set and reset the zero and tare values. The zero set up during calibration
remains the ‘true zero’ but the new ‘current zero’ can be set up by using the SZ command. If the SZ command
is issued and accepted then all weigh
t values will then be based on the new ‘current zero’. Please remember
that the zero value will be subject to the Zero tracking function if enabled. If the weight signal is not stable (as
defined by No motion range NR and No motion time NT) then both, the set zero SZ and set tare ST commands
will be disabled. Also the set zero SZ command is not allowed if the new zero value required and the
‘calibration zero’ differ by more than 2 % of the CM value (maximum allowable value).
See chapter 9 Used in “Approved” applications.
8.5.1. SZ Set System Zero
[ RPDO1,02 ]
This command sets a new “current zero” which is then the basis of all weight values until further updated by the
zero tracking function, another SZ command or the “reset zero” command RZ.
Master (PC / SPS) sends
Slave (GLDM 64.1.1)
responds
Meaning
SZ
OK
Set zero performed
The SZ command will fail (GLDM
64.1 responds with ERR) if the new “current zero” is more than 2%
*
(of
CM) higher or lower than the “true zero” set during calibration. The SZ command will also fail if the weight
signal is not stable as defined by No motion range (NR) and No motion time (NT). If the weight signal is
“stable”, the response to the IS command (Device Status) will show the “signal stable” bit active and the SZ
command will be accepted (OK). If the “signal stable” bit is not active, the SZ command will be rejected and
the GLDM will respond with ERR (error).
*
Note: Tis value can also be user defined
– use ZR command.