Access from the User Program
KL3444, KL3448, KL3454 und KL3458
47
Version: 3.2.0
7.3
Control and Status Bytes
Channel 1
The control and status bytes (CB1 and SB1) for channel 1 in the
are described below.
Channel 2, channel 3 and channel 4
The control and status bytes of channels 2, 3 and 4 are structured like the control and status byte of channel
1.
7.3.1
Process data mode
Control byte 1 in process data mode
Control byte 1 (CB1) is located in the
, and is transmitted from the controller to the
terminal. In process data mode it has no function.
Bit
CB1.7
CB1.6
CB1.5
CB1.4
CB1.3
CB1.2
CB1.1
CB1.0
Name
RegAccess
-
-
-
-
-
-
-
Key
Bit
Name
Description
CB1.7
RegAccess
0
bin
Register communication off (process data mode)
CB1.6 …
CB1.0
-
0
bin
reserved
Status byte 1 in process data mode
The status byte 1 (SB1) is located in the
and is transmitted from terminal to the controller.
Bit
SB1.7
SB1.6
SB1.5
SB1.4
SB1.3
SB1.2
SB1.1
SB1.0
Name
RegAccess
Error
LimitValue 2 State
LimitValue 1 State Overrange
Underrange
Key
Bit
Name
Description
SB1.7
RegAccess
0
bin
Acknowledgment for process data mode
SB1.6
Error
1
bin
General error bit
SB1.5 …
SB1.4
LimitValue 2
State
00
bin
Limit value 2 not enabled
01
bin
Process data less than limit value 2
10
bin
Process data greater than limit value 2
11
bin
Process data equal limit value 2
SB1.3 …
SB1.2
LimitValue 1
State
00
bin
Limit value 1 not enabled
01
bin
Process data less than limit value 1
10
bin
Process data greater than limit value 1
11
bin
Process data equal limit value 1
SB1.1
Overrange
1
bin
Permissible measuring range exceeded
SB1.0
Underrange 1
bin
Lower measuring range limit violated
Содержание KL3444
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