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Supported device types and versions
Communication line configuration
Communication station configuration
Station protocol parameters
I/O tag configuration
Changes and modifications
Document revisions

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The ASCII Client/Server protocol is intended for parsing serial communication containing simple text-oriented data (data sentences) that conform to a template
StartMark Data1 Separator Data2 Separator .... DataN EndMark

Parameters StartMark, Separator and EndMark parameters can be configured within the station address.

It is also possible to periodically transmit textsend text-oriented data with an identical template - with the fact that the . The StartMark, Separator and EndMark parameters for transmission transmitting can be different from those for receptionreceiving.

Example of received data:

Vysielam<CR><LF>11Sending<CR><LF>11.8<CR><LF>-17.519723239035<CR><LF>12.2<CR><LF>0.3312<CR><LF>1.465<CR><LF>0.01<CR><LF> 11.384611976362<CR><LF>

Setting individual parameters:

StartMark = ielam<CR><LF>ding<CR><LF>

Separator = <CR><LF>

EndMark = VysSen


Note: this communication protocol is simpler than the Generic User Protocol and only offers simple value parsing. On the other hand, parsing does not need to be implemented in the ESL script, but is performed directly by the KOM process.

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Note: StartMark, Separator and EndMark parameters can also contain special (control) characters in symbolic form, e.g. <CR> or <LF>. The following table lists the supported characters:

Table 1

Symbolic formCharacterASCII value
<NUL>
NUL0
<SOH>
SOH1
<STX>
STX2
<ETX>
ETX3
<EOT>
EOT4
<ENQ>
ENQ5
<ACK>
ACK6
<BEL>
BEL7
<BS>
BS8
<HT>
HT9
<LF>
LF10
<VT>
VT11
<FF>
FF12
<CR>
CR13
<SO>
SO14
<SI>
SI15
<DLE>
DLE16
<DC1>
DC117
<DC2>
DC218
<DC3>
DC319
<DC4>
DC4

20

<NAK>
NAK21
<SYN>
SYN22
<ETB>
ETB23
<CAN>
CAN24
<EM>
EM25
<SUB>
SUB26
<ESC>
ESC27
<FS>
FS28
<GS>
GS29
<RS>
RS30
<US>
US31
<SPACE>
SPACE32


Kotva
stanica_parametre
stanica_parametre
Station protocol parameters

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The following station parameters can be set:

Table 2

transmission
Full name

Description

UnitDefault value

Kotva
wt
wt
Wait timeout

Waiting between data readings.sec0.2

Kotva
tm_factor
tm_factor
Maximum read timeout

Maximum reading time of one data sentence (if data input is enabled in the station configuration).
If the data sentence is not fully read within this time, the state machine is reset and waiting for the startup sequence to arrive.

sec5

Kotva
armp
armp
Data output period

Data transmission period (if

transmitting is enabled in the station configuration).

sec60

Kotva
moxat
moxat
Moxa timeout

If the SerialOverUDP Device Redundant communication line is used, on which two serial servers are configured (e.g. Moxa NPort), the parameter specifies a timeout after which the redundant serial servers will be switched in the event of a communication error (if no data is received within this time limit).

sec120


Kotva
merany_bod
merany_bod
I/O tag configuration

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Possible value types of I/O tag: Ai, Ci, Ao, Co, Di, Dout.


Kotva
in
in
Input I/O tags:


  • The input I/O tag has an address IN.
    Note: on redundant lines an I/O tag with address IN receives values read from any line (primary/secondary), eventually from any system (A/B).
  • on line-redundant lines (Serial Line Redundant, SerialOverUDP Line Redundant, TCP/IP-TCP Redundant) it is possible to configure I/O tags with addresses IN_A and IN_B to distinguish inputs from primary/secondary line
  • on system-redundant lines (Serial System&Line Redundant, SerialOverUDP System&Line Redundant) it is possible to configure I/O tags with addresses IN_A, IN_B, IN_C, IN_D to distinguish inputs from primary/secondary line of system A/Ba numerical address (1 ... 999) indicating the position of the value (Data1, Data2 ... Data N) in the received data sentence
    StartMark Data1 Separator Data2 Separator .... DataN EndMark
    Note: if there are no I/O tags for some addresses, these values ​​will be ignored.
    Example: Input I/O tags with addresses 1 and 3 are configured, the value with address 2 (Data2) will be ignored.


Kotva
out
out
Output I/O tags:


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  • a numerical address (1 ... 999) indicating the position of the value (Data1, Data2 ... Data N) in the sent data sentence.
    An I/O tag of type Dout is written as 0/1, an I/O tag of type Ao as a floating point with 2 digits after the decimal point (e.g. -123.45).
    Note: if there are no I/O tags for some addresses, then these values ​​will not be sent (nor the separators between them).
    Example: Output I/O tags with addresses 1 and 5 are configured, the following data sentence will be sent:
    StartMark Data1 Separator Data5 EndMark

Kotva
zmeny_upravy
zmeny_upravy
Changes and modifications

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