ProSoft Technology 5201-DFNT-DH485 - Manual (Page 26)

DH485 ♦ ProLinx Gateway Configure the Module
DH485 Interface Driver Manual
Page 26 of 44
ProSoft Technology, Inc.
August 27, 2009
3.5.6 Swap Code
This field changes the order of the bytes and/or words used when sending or
receiving the data. The following codes are utilized:
Swap Code Description
0 None - No Change is made in the byte ordering (1234 = 1234)
1 Words - The words are swapped (1234=3412)
2 Words & Bytes - The words are swapped then the bytes in each word are
swapped (1234=4321)
3 Bytes - The bytes in each word are swapped (1234=2143)
3.5.7 Poll Interval
This field sets the time interval between successive execution of the command.
This parameter is specified in seconds. If the field is set to 10, the command will
not be executed more frequently than every 10 seconds.
3.5.8 Node Number
This field defines the node address of the DH-485 node to send the command
request. This field should be set to a value from 0 to 31.
3.5.9 Function Code
This field defines the function to be executed by the command. The module uses
the following codes:
0 = Read
1 = Write
3.5.10 File Type
This field defines the file type to be interfaced with in the other DH-485 node. The
program utilizes the following codes for this field:
0 = Status File (2 bytes per element)
1 = Bit File (2 bytes per element)
2 = Timer File (6 bytes per element)
3 = Counter File (6 bytes per element)
4 = Control File (6 bytes per element)
5 = Integer File (2 bytes per element)
6 = Floating-point File (4 bytes per element)
10 = CIF File (1 byte per element)
3.5.11 File Number
This field defines the file number to access. This field is ignored for CIF file
access and should be set to 0. For Bit, Timer, Counter, Control, Integer, and
Float data types, a maximum value of 255 is valid.