MPH-02, MPB-02, MPD-02
Handling, Diagnostic and Service Functions
10-93
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Dynamic part of the telegram header
The dynamic part of the telegram header can contain up to 8 byte. The
telegram number (‘PaketN‘ byte), when it was declared in the control byte
(‘Ctrl‘ byte in the static part), is always in the last place in the dynamic part
of the telegram header. If not all subaddresses are required, they are not
available in the telegram. When a command telegram is transmitted from
one hierarchical level to the hierarchical level below it, the subaddress
block is reduced by one address. On the way back one address is added
to the subaddress block in the reaction telegram.
Byte
Name
Description of the bytes in the dynamic part of the telegram header
9
AdrES1
slave address in the 1
st
sublevel
10
AdrES2
slave address in the 2
nd
sublevel
11
AdrES3
slave address in the 3
rd
sublevel
12
AdrES4
slave address in the 4
th
sublevel
13
AdrES5
slave address in the 5
th
sublevel
14
AdrES6
slave address in the 6
th
sublevel
15
AdrES7
slave address in the 7
th
sublevel
16
PaketN
Package number (when bit 3 was set in "Ctrl" byte)
-
At the first request with a package number
≠
0 the request is processed.
The reaction telegram is stored and sent by the slave.
-
When the request is repeated (with the same package number), it is not processed. The
slave sends the stored reaction telegram.
-
When there is another request with a new package number
≠
0 or when there is a
changed
request (static telegram header), the request is processed. The stored reaction
telegram
is overwritten with the new reaction telegram and the new reaction telegram is sent by
the slave.
-
When there is request with package number = 0, it is always processed. The reaction
telegram is sent by the slave but not stored. Reaction telegrams that still are stored are
cleared (re-initialization)!
-
When there is request without package number, it is always processed. The reaction
telegram is sent by the slave but not stored. Reaction telegrams that still are stored are
maintained!
Only with the package monitor is it possible to repeat individual sequential telegrams that
were incorrectly transmitted, without canceling the running sequential telegram cycle!
Fig. 10-54: SIS telegram header, dynamic part
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
