Output Buffer, Configuration And Explanation - Balluff BIS C-60 3 Serie Handbuch

C60_3-025_825645_1310_e.p65
35
Assembly object
Status query
☞
☞
36
Configuration of the
output buffer for one
read/write head
(Example shown for
Head 1)
Description of
Output Buffer
Please note the
basic procedure on
30 and the
examples on pages
50...64.
36 english
Function Description
Input and Output Buffers
To query the current status of both heads on the processor, the assembly object (class
0x04, instance 0x64, attribute 0x03) can be accessed. The controller accesses the
assembly object by using explicit message.
The explicit-message connection must have been successfully opened by the controller.
The call GetAttributeSingle returns 4 bytes:
Byte 3 Byte 2
Head 2
Input buffer Input buffer
Byte 1 Bit header (00 )
Hex
For additional informatoin on the input buffer, see
Function Description
Mode 1: Output buffer, configuration and explanation
Bit No. 7 6
Subaddress
00 = Bit Header CT TI
Hex
01 Command Designator
Hex
02 Start Address (Low Byte) or Program No.
Hex
03 Start Address (High Byte)
Hex
04 No. of Bytes (Low Byte)
Hex
05 No. of Bytes (High Byte)
Hex
06
Hex
...
Sub- Bit Meaning
address Name
00 CT Data carrier type Select data carrier type:
Hex
Bit Header 0
1
TI Toggle-Bit In
HD Select head
0
1
GR Ground state
(continued next )
Byte 1 Byte 0
Head 1
Input buffer Input buffer
Byte 1 Bit header
40ff.
5 4 3 2
HD GR
or
or
or
or
or
Data
Data
Function Description
for data carrier type:
32 Byte block size BIS C-1_ _-02, -03, -04, -05
64 Byte block size BIS C-1_ _-10, -11, -30
Shows during a read action that the controller is ready
for additional data.
For Head 1: For Head 2:
Select Head 1.1 Select Head 2.1
Select Head 1.2 Select Head 2.2
Causes the BIS system to go to the ground state
for the respective read/write head.
Any pending command is cancelled.
35
english
1 0
AV Bit Name
Data
Data
Data
Data
Data