Transaction
Register
Read
Bytes 0 - 7 of the error protocol entry #1
Write
7C
CC
01
01
01
Wait for FREL = 1
Read
Bytes 8 - 15 of the error protocol entry #1
8.5.12
Usage histogram
This resource gives histogram values of encoder parameters. The histogram values
indicate how often a parameter value was measured during the lifetime of the encoder.
Direct read access to usage histogram returns the defining values:
Table 108: Usage histogram defining values
Defining value
Offset
Value
RID
0CDh
Resource name
0
"USAGEHIS"
Data size
1
4
Read access level
2
0
Write access level
3
15
Time overrun
4
70
Data type
5
20h – structure with 16 bytes
Mandatory
no
Recorded encoder parameters are measured at one minute intervals and stored every
20 minutes in a non-volatile memory.
The following table contains the encoder parameters that can be recorded in a his‐
togram and stored. In addition, the range limits and the resolution of the histogram are
given.
Table 109: Encoder parameter histograms definitions
Encoder parameters
Min. class
Max. class
Width of histogram class
Temperature
< -40 °C
>= 120 °C
10 °C
Sensor monitor
product-specific product-specific
product-specific
Supply voltage
< 6.0 V
>= 14.0 V
1.0 V
Rotation speed
0 to 500 min
-1
>= 10,000 min
-1
500 min
-1
The values of the usage histograms are each stored in 4 bytes.
The values for the usage histograms are given in the following format:
Table 110: Value definitions in usage histograms
Byte
Value
Description
3/2/1
00 00 00h
-
FF FF FFh
Number of parameter values in the histogram class
0
00h
-
FFh
Identification of histogram class
The identification of the histogram class is transmitted in the offset value with an iden‐
tification for the requested encoder parameter. The identification of the histogram class
depends on the encoder parameter selected (see the following table).
8
MOTOR FEEDBACK SYSTEM RESOURCES
110
T E C H N I C A L I N F O R M A T I O N | HIPERFACE DSL
®
8017595/ZTW6/2018-01-15 | SICK
Subject to change without notice