Data Transmission Communication; Process Channel - Roland R1000 Series Manual

Communication with the PLC
6.2

Data transmission communication

The L20 uses an IN/OUT configuration for the cyclical data exchange with the master. This means
that for each transmission direction a parameter channel with 8 Bytes as well as a process channel
with 16 Bytes is used.
The R100 is controlled via the process channel and via the parameter channel all system and
application data is available.
The following table shows the layout of the communication facility:
Inputs (PLC  L20)
Byte
BIN0
BIN1
BIN2
BIN3
BIN4
BIN5
BIN6
BIN7
BIN8
BIN9
BIN10
BIN11
BIN12
BIN13
BIN14
BIN15
BIN16
BIN17
BIN18
BIN19
BIN20
BIN21
BIN22
BIN23
* only for L20-3-XX-S unit version
6.3

Process channel

The process channel is implemented via the bytes 8 to 23.
36
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
Double Sheet Control System R1000 series L20
with integrated fieldbus interface
Meaning
Management
Program index
Parameter index
Application data byte 0
Application data byte 1
Application data byte 2
Application data byte 3
Checksum
Control
Program selection 1 – 255
--
--
Control Measuring channel 1
--
--
Control Measuring channel 2*
--
--
Control Measuring channel 3*
--
--
--
--
--
Manual
Outputs (L20  PLC)
Byte Meaning
BOUT0 Management
BOUT1 Program index
BOUT2 Parameter index
BOUT3 Application data byte 0
BOUT4 Application data byte 1
BOUT5 Application data byte 2
BOUT6 Application data byte 3
BOUT7 Checksum
BOUT8 Control signals (0-sheet, 1-sheet, 2-sheet)
BOUT9 Actual measuring program
BOUT10 Measuring value, Measuring channel 1 High Byte
BOUT11 Measuring value, Measuring channel 1 Low Byte
BOUT12 Control signal channel 1
Measuring value, Measuring channel 1 High Byte
BOUT13
(identical with BOUT10)
Measuring value, Measuring channel 1 Low Byte
BOUT14
(identical with BOUT11)
BOUT15 Control signal channel 2*
BOUT16 Measuring value, Measuring channel 2 High Byte*
BOUT17 Measuring value, Measuring channel 2 Low Byte*
BOUT18 Control signal channel 3*
BOUT19 Measuring value, Measuring channel 3 High Byte*
BOUT20 Measuring value, Measuring channel 3 Low Byte*
BOUT21 --
BOUT22 --
BOUT23 --
B0063191 / 1.3