20
13
-0
3
30
Commands
Select one of the predefined modules. In doing so, make sure that the data field
size for the read/write commands used is sufficient, depending on the parameter
word count.
One word has 32 bits.
The data hold time is the time after which the identification system may overwrite
the input data field. Select a time that is longer than the cycle time of the controller.
If two data carriers are read directly after one other, the code of the data carrier
read first remains in the input data field for the specified time. Then the code of the
second data carrier is entered.
The basic setting of the data hold time is "0". The data hold time is set at 10 ms
intervals. The value range is 0 ... 2550 ms. Certain values lead to the
IDENTControl communication not starting, i.e. the communication does not
change into the state Data Exchange. The bus error LED stays on and the
IDENTControl is not found by the controller. All data hold time values
corresponding to a binary code like
xxxx x1xx
lead to this error.
Valid values are 0, 1, 2, 3, 8, 9, 10, 11, 16, 17, 18,
…
Not allowed are 4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22,
…
The diagnostic interrupt defines whether an interrupt is triggered via the
PROFIBUS when a new diagnostic message appears. You can switch the
diagnostic interrupt on and off.
7.3.2
Device identification/software version message for PROFIBUS DP
The device identification and the software version are transferred via the DP
function
“
Device-Related Diagnostics
”
.
Note!
The
“
Data Hold Time
”
and the diagnostic interrupt are stored in the GSD file.
These values can be changed via the properties of the PROFIBUS slave.
Address
Length
Content
Byte 0
1 byte
Header byte, length of external diagnostics
Byte 1
2 bytes
16 bits external diagnostics(see table "GSD file (device-related
diagnostic bits)" on page 32)
Byte 3
1 byte
Identification byte of the IDENTControl Compact
Byte 4
3 bytes
Software number of the IDENTControl Compact
Byte 7
6 bytes
Software creation date of the IDENTControl Compact
Byte 13
9 bytes
Reserved
Byte 22
1 byte
Identification byte of the R/W head
Byte 23
3 bytes
Software number of the R/W head
Byte 26
6 bytes
Software creation date of R/W head