Balluff BIS M-370-000-A02, Manual, Page: 168 / 198

PROFIBUS INTERFACE
161
9
The Slave, at this point, after acknowledging the final fragment, knows it has the complete
CBx command, so it processes the command.
Assuming the command is successful, the Slave will write the respo
nse (in this case a “Tag
Write
Successful” response) into the Input buffer, and then toggle
Bit 0 of the IBCB &
IBDCB .
(See the
Green changes below)
Output Buffer Input Buffer
Byte # Value Byte # Value
00:
82
Output Buffer Control Byte
(OBCB)
7 6 5 4 3 2 1 0
[1] [0] [0] [0] [0] [0] [1] [0]
00
83
Input Buffer Control Byte
(IBCB)
7 6 5 4 3 2 1 0
[1] [0] [0] [0] [0] [0]
[1] [1]
01: 00 (Always 0) 01: 00
02: 06 (Packet length in bytes) 02: 0C (Packet length in bytes)
03:
04:
05:
06:
07:
08:
09:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30: 85
86
87
88
89
90
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00 (CBx Command Data Byte 45)
(CBx Command Data Byte 46)
(CBx Command Data Byte 47)
(CBx Command Data Byte 48)
(CBx Command Data Byte 49)
(CBx Command Data Byte 50)
03:
04:
05:
06:
07:
08:
09:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
..
30:
00
06
AA
06
01
01
01
01
00
01
20
00
00
00
00
00
00
00
..
00
(CBx Response word length MSB)
(CBx Response word length LSB)
Minimum of 6 words
(CBx Response Type)
AA=Normal Response
(CBx Response Opcode)
06=echo of "Tag Write"
(CBx Response Instance Counter)
(CBx Response “Node ID”)
(CBx Response Timestamp Month)
(CBx Response Timestamp Day)
(CBx Response Timestamp Hour)
(CBx Response Timestamp Minute)
(CBx Response Timestamp Second)
(CBx Response Not Used)
31: 82 Data Consistency Byte (OBDCB) 31: 83 Data Consistency Byte (IBDCB)