Notes For Creating The Control Program - Pepperl+Fuchs IC-KP2-2HB17-2V1D Manual

IC-KP2-2HB17-2V1D
Commands
Address
(0-based)
2003d
2004d -
2011d
If you hold a type IPC03 tag in front of the read/write head, you can read the data by executing
the command read holding registers again.
Command: read/write multiple registers (17h)
This MODBUS command combines the functions of the commands write multiple registers
and read holding registers. You should use this command if you wish to systematically
exchange data via the PLC.
If you use this command to execute an identification command (e.g. a read command), you will
not receive the answer in the response associated with this request. The command requires a
certain amount of time to finish processing, after which the data will be available.
You must know the following parameters to make the request:
Writing:
Start address (depending on channel)
Number of registers to be written:
Reading:
Start address
Number of registers to be read:
The IDENTControl Compact sends a response. If the IDENTControl Compact is scheduled to
execute the command a number of times in succession, change the first four bytes of the
telegram. Remember to set the toggle bit.
7.7.4

Notes for creating the control program

TCP connection:
Many MODBUS masters enable the use of transactions accompanied by a TCP link
connection and disconnection. As outlined in the MODBUS specification, we recommend
maintaining as opposed to terminating the connection following a transaction.
38
Register division Use
Byte number of the
identification
telegram
High byte Status
Byte 4
Low byte Reply counter
Byte 5
High byte Data
Low byte Data
Type Meaning
05h 05h = identification
read error (meaning of
the identification
statuses see chapter
7.17)
02h Increases by 1 after
each additional
response.
00h No data read because
no tag in front of the
read head.
00h No data read because
no tag in front of the
read head.
Channel 0 0d
Channel 1 1000d
Channel 2 2000d
Maximum 121d
Start address
Maximum 125d