EFKA AB286A5400
12
7.5 Communication Monitoring (System Values D, Group E)
A “timeout” for communication monitoring can be set by means of parameter E3. This “timeout” can be set at 10-
millisecond steps within a range of 0 and 255 (max. 2.5 seconds). If, in this parameter, a value not equal to zero is inputted,
there must always be an RTS to or a data link establishment with the slave within the allowed time. If the “timeout” is
exceeded, the drive stops in position 2 and sets bit 6 in the communication register (parameter 00). The “timeout” starts
with the next telegram after the data link establishment for parameter E3. Monitoring can be deactivated by inputting the
value zero in parameter E3 (preset value). Please note that the new value becomes effective only with the next telegram.
7.6 Control Characters
SOH
$01
start of header
ADR
$F0
address (can be set)
STX
$02
start of text
ETX
$03
end of text
ACK
$06
acknowledge
NAK
$15
not acknowledge
ENQ
$05
enquiry
BCC
Check sum EXOR logic operation from
ADR
to
ETX
7.7 Special Characters
=
$3D
equals / value assignment
,
$2C
Separator in list call
.
$2E
Separator
7.8 Data Link Establishment
Higher level control = Master, AB286A = Slave
Master transmits
-
SOH
ADR
STX
Text
ETX
BCC
Slave transmits
-
ADR
ACK
If telegram o.k.
-
ADR
NAK
In case of error
Parameters in the control are modified by the data link establishment. The
Text
contains the modification information.
The general form of a modification is:
Parameter = Value.
Parameter number and corresponding range of values are described in chapter
Parameters
.
7.9 RTS
Master transmits
-
SOH
ADR
STX
Text
ENQ
Slave transmits
-
SOH
ADR
STX
Text
ETX
BCC
-
ADR
NAK
In case of error
The Master receives information on the control status by means of RTS. This information is transmitted in the form of
status bytes. RTS only transmits the parameter number. More information on status bytes is described in chapter
Parameters
.
7.10 Text
The
Text
contains all default options for the modification of settings in the AB286A control or polling of operational
statuses. These setings and operational statuses are described in detail in chapter
Parameters
.
Summary of Contents for AB286A5400
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