Leuze electronic GmbH + Co. KG
MA 238
i
39
10.3 Description of the output bytes (control bytes)
10.3.1 Structure and meaning of the output bytes (control bytes)
Table 10.2:
Structure of the output bytes (control bytes)
Bits of the output byte (control byte) 0
Bits of the output byte (control byte) 1
10.3.2 Detailed description of the bits (output byte 0)
Bit 0: Command mode: Command mode
The following two control bits ("Bit 1: Broadcast: Broadcast" on page 39 and "Bit 2 … 6: Address bits 0 ..
4: Address 0 .. 4" on page 40) are only relevant with a connected MA 3x. With other devices, these fields
are ignored.
Bit 1: Broadcast: Broadcast
7
6
5
4
3
2
1
0
ND
Address 4 Address 3 Address 2 Address 1 Address 0 Broadcast Command
mode
Control byte 0
CTB
SFB
R-ACK
Control byte 1
Data byte 1
Data
Data byte 2
…
Bit no.
Designation
Meaning
0
Command mode
Command mode
1
Broadcast
Broadcast
(only relevant with a connected MA 3x)
2 … 6
Address 0 .. 4
Address bits 0 .. 4
(only relevant with a connected MA 3x)
7
ND
New Data
Bit no.
Designation
Meaning
0
R-ACK
Read-Acknowledge
2
SFB
Send data from transmit buffer
3
CTB
Copy To Transmit-Buffer
Output data
Description
Addr.
Data
type
Value range
Default
Command mode
Command mode
This bit is used to activate Command mode. In Com
-
mand mode, no data is sent by the PLC to the Leuze end
device via the gateway. In Command mode, various bits
that execute corresponding commands depending on
the selected Leuze device can be set in the data- or
parameter field. For further information, see
chapter 11.1.3 "Command Mode".
0.0
Bit
0: Default, transparent
data transmission
1: Command mode
0
Output data
Description
Addr.
Data
type
Value range
Default
Broadcast
Broadcast
A broadcast only functions with a multiNet network con
-
nected via the MA 3x. If this bit is activated, the gateway
automatically adds the broadcast command "00B"
before the data. This is directed at all participants in the
multiNet.
0.1
Bit
0: No broadcast
1: Broadcast
0