Device Range That Can Be Set - Mitsubishi Electric GT14 User Manual

64.5 Device Range that Can Be Set

For details on the device range of controllers that can be
used on GT14 Handy, refer to the following manuals.
GT Designer3 Version1 Screen Design Manual
(Fundamentals)
GOT1000 Series Connection Manual
(Microcomputer, MODBUS Products,
Peripherals) for GT Works3

MODBUS communication control function on
the GS device
(1) Function overview
This function is to prevent the communication response
delay that occurs because the devices on the
MODBUS network differ from each other in network
specification.
This function is effective for the MODBUS network
conditions as described below:
• When only a part of function codes is supported
(Example: "0F" is not supported)
• When the maximum transfer size of function code is
small (Example: The maximum number of coil read
times is 1000)
(2) Communication settings
When the MODBUS/RTU communication driver is
assigned to multiple channel numbers using the multi-
channel function, the following cases are possible. The
communication settings are shared between the
assigned multiple channel numbers, or the individual
communication setting is configured to a specific
channel number.
By setting the device GS579, either the GS device used
for sharing communication settings (GS570 to GS576)
or the GS device used for individual communication
setting (GS590 to GS617) is validated.
GS
Description
device
Bit0: 0 Configure the Ch1 communication settings
between GS570 to GS576.
1 Configure the Ch1 communication settings
between GS590 to GS596.
Bit1: 0 Configure the Ch2 communication settings
between GS570 to GS576.
Validity of 1 Configure the Ch2 communication settings
setting between GS597 to GS603.
GS579
channel Bit2: 0 Configure the Ch3 communication settings
number between GS570 to GS576.
1 Configure the Ch3 communication settings
between GS604 to GS610
Bit3: 0 Configure the Ch4 communication settings
between GS570 to GS576.
1 Configure the Ch3 communication settings
between GS611 to GS617.
(a) When sharing communication settings between
multiple channel numbers
The table below shows the settings for the GS
device. The GS device can be changed even in the
middle of the operation.
GS
Description
device
Bit0: 0 Using Function Code "0F"
GS570 Command selection
Bit1: 0 Using Function Code "10"
64 - 4
64. MODBUS(R)/TCP CONNECTION
64.5 Device Range that Can Be Set
Set value
Set value
1 Not using Function Code "0F"
1 Not using Function Code "10"
GS
Description
device
Function Code "01"
0: 1000
Specification for the
GS571 1 to 2000: Specify the maximum number.
max. number of coil
Other than above: 2000
read times
Function Code "02"
0: 1000
Specification for the
GS572 1 to 2000: Specify the maximum number.
max. number of input
Other than above: 2000
relay read times
Function Code "03"
0: 125
Specification for the
GS573 1 to 125: Specify the maximum number.
max. number of holding
Other than above: 125
register read times
Function Code "04"
0: 125
Specification for the
GS574 1 to 125: Specify the maximum number.
max. number of input
Other than above: 125
register read times
0: 800
Function Code "0F"
1 to 800: Specify the maximum number.
Specification for the
Other than above: 800
GS575 max. number of
When Bit0 of GS570 is "1", the function code
multiple-coil write
"0F" is not used, and therefore the setting of
times
GS575 will be disabled.
0: 100
Function Code "10"
1 to 100: Specify the maximum number.
Specification for the
Other than above: 100
GS576 max. number of
When Bit1 of GS570 is "1", the function code
multiple-holding
"10" is not used, and therefore the setting of
register write times
GS576 will be disabled.
(b) When configuring individual communication
settings for specific channel numbers
The table below shows the settings for the GS
device.
GS device
Description
Ch1 Ch2 Ch3 Ch4
GS GS GS GS
Command selection
590 597 604 611
Function Code "01"
GS GS GS GS Specification for the
591 598 605 612 max. number of coil
read times
Function Code "02"
Specification for the
GS GS GS GS
max. number of
592 599 606 613
input relay read
times
Function Code "03"
Specification for the
GS GS GS GS
max. number of
593 600 607 614
holding register
read times
Function Code "04"
Specification for the
GS GS GS GS
max. number of
594 601 608 615
input register read
times
Function Code "0F"
Specification for the
GS GS GS GS
max. number of
595 602 609 616
multiple-coil write
times
Function Code "10"
Specification for the
GS GS GS GS
max. number of
596 603 610 617
multiple-holding
register write times
Set value
Set value
Bit0: 0 Using Function Code "0F"
1 Not using Function Code "0F"
Bit1: 0 Using Function Code "10"
1 Not using Function Code "10"
0: 1000
1 to 2000: Specify the maximum
number.
Other than above: 2000
0: 1000
1 to 2000: Specify the maximum number.
Other than above: 2000
0: 125
1 to 125: Specify the maximum number.
Other than above: 125
0: 125
1 to 125: Specify the maximum number.
Other than above: 125
0: 800
1 to 800: Specify the maximum number.
Other than above: 800
When Bit0 of GS570 is "1", the function
code "0F" is not used, and therefore the
setting of GS575 will be disabled.
0: 100
1 to 100: Specify the maximum number.
Other than above: 100
When Bit1 of GS570 is "1", the function
code "10" is not used, and therefore the
setting of GS576 will be disabled.