Technical data

Value of
link_status
Abbreviation
PROFIBUS
Meaning
SDA
00
H
01
H
02
H
03
H
11
H
12
H
OK
UE
RR
RS
NA
DS
positive acknowledgment, service executed.
positive acknowledgment, remote user/FDL interface error
positive acknowledgment, resources of the remote FDL
controller not available.
service or rem_add on remote SAP not activated.
no reaction (Ack./Res.) from the remote station.
local FDL/PHY not in the logical token ring or not connected
to bus.
SDN
00
H
12
H
OK
DS
positive acknowledgment, transfer of data by local FDL/PHY
controller completed.
local FDL/PHY not in the logical token ring or not connected
to bus.
SRD
08
H
0A
H
01
H
02
H
03
H
09
H
0C
H
0D
H
11
H
12
H
DL
DH
UE
RR
RS
NR
RDL
RDH
NA
DS
positive acknowledgment, reply data low exist.
positive acknowledgment, reply data low exist.
positive acknowledgment, remote user/FDL interface error.
positive acknowledgment, resources of the remote FDL
controller not available.
service or rem_add on remote SAP not activated.
positive acknowledgment, resources of the remote FDL
controller not available.
reply data (low) exist, but negative acknowledgment for
transmitted data, 09
H
(NR).
reply data (high) exist, but negative acknowledgment for
transmitted data , 09
H
(NR).
no reaction (Ack./Res.) from the remote station.
local FDL/PHY not in the logical token ring or not connected
to bus.
REPLY_UPDATE_SINGLE/REPLAY_UPDATE_MULTIPLE
00
H
12
H
OK
LR
positive acknowledgment, data area loaded.
response resource currently being used by MAC.
SDA/SDN/SRD/REPLY_UPDATE_SINGLE/REPLAY_UPDATE_MULTIPLE
10
H
15
H
LS
IV
service on local SAP not activated.
invalid parameters in the request header.
Table 8.1 Meaning of the Values in Byte 3 (link_status) in the Confirmation Header
Free Layer 2 Communication B8976060/02
Volume 1 8 - 8