Balluff BTL5-T110 Technische Beschreibung Seite 77

BTL5-T110...
Configuration and Profibus Connection –
Transducer Class 3/4
6 Startup (cont.)
6.3.3.2 Description of the Read
and Write telegram
Data exchange using MSAC_C2
differs from MSAC_C1 only in the
SAP number used and the Idle
telegrams inserted by the master.
Byte 0 Byte 1
SD LE
68h X
Table 6-18: Message structure of Abort.req
Byte
Data type
number
0 Unsigned8
1 Unsigned8
2.0 - 2.3 Unsigned4
2.4 - 2.5 Unsigned2
2.6 - 2.7 Unsigned2
Table 6-19: Structure of the DU in Abort.res
6.3.4 Configuring STEP7
Software
The function module FB36 is
needed for acyclic communication.
This module can be requested
along with a small sample
application for the CPU412-1 at
profibus@balluff.de.
30
english
6.3.3.3 Description of the Abort
The Abort command reenables the
connection opened by the master,
so that the SAP is usable again.
The slave does not respond to this
message.
Byte 2 Byte 3 Byte 4
LEr SD DA
X 68h 8x
Meaning Description
Each service is
Function Num assigned exactly one
function code.
This parameter is
used to determine the
Subnet
source of the
Abort.req.
Reason Code
Instance ID
reserved
telegram (Abort.req)
Byte 5 Byte6 Byte7
SA FC DSAP
8x X 30h
Value
0x58 = Abort
0 NO
1 SUBNET-LOCAL
2 SUBNET-REMOTE
3..255 reserved
0x00
0x0 FDL
0x1 MSAC_C2
0x2 USER
0x3 reserved
0x0
Byte8 Byte9..n-2 Byte n-1
SSAP DU FC S
see
Tab. 6-19:
DU
32h X
structure
in
Abort.req
Byte n
ED
16h