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Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions
Required setting The recommended settings of the 1770-KF3 device
Supported device types and versions
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The protocol Allen-Bradley DF1 Full Duplex protocol supports communication with Allen-Bradley devices of the SLC-500 series. Communication supports (is verified for) for the following devices:
Table 1
| Device type | Meaning | Protocol version |
|---|
| Allen-Bradley SLC 5/04 | Communication with |
RS232 via , | supports communication with all the devices of the SLC-500 series (description of the setting is mentioned at the end of the chapter). | - |
| Kotva |
|---|
| komunikacna_linka |
|---|
| komunikacna_linka |
|---|
|
Communication line configuration
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- Communication line category: Serial, SerialOverUDP Device Redundant.
- Serial line parameters:
- baud Baud rate (for 1770-KF3 there can be used , 300, 600, 1200, 2400, 4800, 9600 or 19200 Baud can be used - parameter 3 of KF3 settings - RS-232C Baud Rate),
- Parity (for 1770-KF3, there can be used None or Even parity can be used - parameter 4 of KF3 setting - RS-232C Parity),
- Handshaking (for 1770-KF3, according to the connection of the RS-232 connecting cable set the parameter 7 of KF3 setting - Flow Control, according to the setting of the RS-232 cable).
Line protocol parameters
Configuration dialog box - tab Parameters, select the protocol Allen-Bradley DF1 Full Duplex protocol.
They influence some optional parameters of the protocol.
Table 2
| Parameter | Meaning | Unit | Default value |
|---|
| Type |
of security by check sum| of checksum for securing of the payload. | CRC
BCC | CRC |
| Activates detailed listings about sending and receiving values and further debug information. | YES/NO | NO |
| Kotva |
|---|
| komunikacna_stanica |
|---|
| komunikacna_stanica |
|---|
|
Communication station configuration
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Communication protocol: Allen-Bradley DF1
Station address: DH-485 Node Address of device in the range of 1 up to 31.
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Communication station - configuration dialog box - the Protocol parameter input field.
They influence some optional parameters of the protocol.
Table 3
| Parameter | Meaning | Unit | Default value |
|---|
| DH-485 Node Address of the communication interface (KF3), the address |
in common use is 0| 0 is commonly used. (Warning, when you use the 1770-KF3 device, its setting is valid for all stations of the line). | - | 0 |
| First |
timeout for a | the response after sending a |
messageTimeout | Delay between response readings |
till | until its finalization. | ms | 100 |
|
Repetition | The number of response readings till its finalization. | - | 40 |
|
Repetition | The number of response readings, if the received response is not the response to the expected transaction. All received messages are to |
be Retry | A retry count of the request in case of a communication failure. | - | 3 |
| Enables block data |
read| reading. It is executed by non-documented functions - |
proceed carefully| careful proceeding is asdvised. | YES/NO | NO |
| Maximum block length for block |
read Value a | an even number within the range of 2 up to 254. | - | 40 |
I/O tag configuration
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Possible I/O tag types: Ai, Ao, Ci, Co, Di, Dout.
I/O tag address is an a text address in text form in the SLC-500 formformat. Address The address format is:
[$] X [file] : element [.field] [/bit]
in which
, |
| X | file type identifier (required - see |
the nr 3, |
| file | file number (optional, if not defined, |
there will be used | the default file number according to |
the nr. 3),| No. 4 will be used) |
| element | the number of an element in the file (required), |
| .field | a sub-element number (optional, used for Output, Input files only), |
| /bit | a bit number (optional, must be within the range of 0..15). |
Table 4
| X | File Type | Default file number |
|---|
| O | Output | 0 |
| I | Input | 1 |
| S | Status | 2 |
| B | Binary | 3 |
| N | Integer | 7 |
| F | Float | 8 |
Output type file
[$]O[n]:e[.s][/b]
"n" the file number - , if there is used other than it is different from the default number of 0,
"e" element number in the file,
"s" sub-element number (0..255),
"b" bit number (0..15).
For example:
O:2
$O0:2/0
O:1.0/1
Note: You cannot write into Output files, only read data.
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Input type file
[$]I[n]:e[.s][/b]
"n" the file number - , if there is used other than it is different from the default number of 1,
"e" element number in the file,
"s" sub-element number (0..255),
"b" bit number (0..15).
For example:
I:1
$I1:2/0
I:2.0/15
Note: You cannot write into Input files, only read data.
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Status type file
[$]S[n]:e[/b]
"n" the file number - , if there is used other than it is different from the default number of number 2,
"e" element number in the file,
"b" bit number (0..15).
For example:
S:0
$S2:40
S:2/15
Note: You cannot write bit-by-bit into Status type files (output I/O tags with the parameter [/b]).
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Binary type file
[$]B[n]:e[/b]
"n" the file number - , if there is used other than it is different from the default number of 3,
"e" element number in the file,
"b" bit number (0..15).
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Integer type file
[$]N[n]:e[/b]
"n" the file number - , if there is used other than it is different from the default number of 7,
"e" element number in the file,
"b" bit number (0..15).
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"n" file number - if there is used other than the default number of 78,
"e" element number in the file.
For example:
F:0
$F8:0
F29:1
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The recommended settings of the 1770-KF3 device
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Further required recommended parameters for the 1770-KF3 device:
- Set the Parameter 0 DH-485 Node Address to 0. You can use other address, see „Communication station protocol parameters" - the parameter „IN",.
- Set the parameter 5 DF1 Device Category to DF1 full-duplex,.
- The parameter 6 Error Detection - there both BCC and CRC16 can be used both BCC and CRC16, see „Communication station protocol parameters" - the parameter „BCC", BCC/CRC Checksum parameter.
- As for the other parameters, the For the others parameters, there are suitable default settings are described in the document „1770-6.5.18, DH-485 Communication Interface User Manual (Cat. No. 1770-KF3)", Allen-Bradley April 1993.
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- Ver. 1.0 - August 22nd, 2000 - document creation.
- Ver. 1.1 - April 27th, 2009 - update of the document.
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