Balluff BIS M-370-000-A02, Manual, Page: 115 / 198

BIS M-62_ MANUAL
108
7
7.3.1 Standard TCP/IP - Command Structure Example
In the following example, a 12-byte command has been issued to the BIS M-626, instructing
the controller to read six bytes from a tag within RF range. A
Timeout Value of five seconds
has been set for the completion of the command.
Word Description MSB LSB
00
Protocol Header in MSB = 0xFF
Node ID in LSB = default value for Cobalt -IND is
one (0x01)
0xFF 0x01
01
Overall Length: 2-byte integer indicating number of
“
words
” in the command packet
0x00 0x06
02
MSB = 0xAA
LSB = Command ID: (example: 0x05
– Read Data
)
0xAA 0x05
03
MSB = 0x00
LSB = Node ID: default value for Cobalt -IND is one
(0x01)
0x00 0x01
04
Timeout Value: 2-byte integer measured in .10
(1/10
th
) second increments.
( 0x0032 = 50 x .10 or 5 seconds )
0x00 0x32
05
Start Address: 2-byte integer identifies tag address
where read will begin
0x00 0x01
06
Block Size: 2-byte integer indicates number of
bytes to retrieve
0x00 0x06
7.3.2 Standard TCP/IP - Response Structure Example
The following resembles a typical response to the command issued in the previous example:
Word Description MSB LSB
00
Protocol Header in MSB = 0xFF
Node ID in LSB = default value for Cobalt -IND is
one ( 0x01 )
0xFF 0x01
01
Overall Length: 2-byte integer indicating number of
“
words
” in the response packet
0x00 0x09
02
MSB = 0xAA
LSB = Command Echo: ( 0x05 - Read Data)
0xAA 0x05
03
MSB = Instance Counter
LSB = Node ID: 0x01
<IC> 0x01
04 Time Stamp: Month / Day ( March 19
th
)
0x03 0x13
05 Time Stamp: Hour / Minute ( 8:15 a.m.) 0x08 0x0E
06
MSB = Time Stamp: Seconds
LSB = Number of Additional Bytes Retrieved: 6
0x00 0x06
07 Retrieved Bytes 1 & 2 0x61 0x62
08 Retrieved Bytes 3 & 4 0x63 0x64
09 Retrieved Bytes 5 & 6 0x65 0x66