Panasonic KT4H User Manual page 61

Serial communication
Cannot be used with Tool port communication. If this option is added, Contact input option cannot be added.
The following operations can be carried out from the external computer.
(1) Reading and setting of the SV, PID values and various set values
(2) Reading of the PV and action status (3) Function change
Communication line
Communication system
Cable length
Communication speed
Data bit/Parity
Stop bit
Communication response time : 5 to 99ms
Communication protocol
Data format
Communication protocol
Start bit
Data bit
Parity
Stop bit
Number of connectable units : Maximum 31 units to 1 host computer
Error detection (*)
Error correction
Instrument number (Address): 1 (1 to 99) Settable by key
Code form (*)
(*) This is automatically switched upon selecting the communication protocol.
Contact input
If this option is added, Serial communication option cannot be added.
SV, SV2, SV3, SV4 or OUT/OFF function can be switched by external contact.
If "Set value memory external selection" or "OUT/OFF external selection 1 (SV, SV2 can be switched)" is selected
during "Contact input function selection", the MEMO display indicates the selected memory number.
Actions depend on the selection of OUT/OFF key function and Contact input function as follows.
When OUT/OFF function ([52]
Connecting terminal number
Between 17-18 Between 16-18
(DI1-COM) (DI2-COM)
Open
Closed
Open
Closed
When Auto/Manual control function ([52]
Connecting terminal number
Between 17-18 Between 16-18
(DI1-COM) (DI2-COM)
Open
Closed
Open
Closed
Circuit current when closed: Approx. 6mA
Internal circuit:
: EIA RS-485
: Half-duplex communication start-stop synchronous
: Maximum communication distance 1,000m
Cable resistance: Within 50
: 9600 (2400, 4800, 9600, 19200bps) Selectable by key (Default: 9600bps)
: 7 bits/Even parity (7 bits, 8 bits/Even, Odd, No parity) Selectable by key
(Default: 7 bits/Even parity)
: 1 (1 or 2) Selectable by key (Default: 1)
: Modbus ASCII (Modbus ASCII/Modbus RTU/MEWTOCOL)
Selectable by key (Default: Modbus ASCII)
Continuous data reading and writing are not available for MEWTOCOL.
Only RD and WD commands are usable in MEWTOCOL.
Modbus ASCII
1
7 or 8
Yes (Even, Odd)
No parity
1 or 2
: Parity,
LRC (Modbus ASCII), CRC-16 (Modbus RTU), BCC (MEWTOCOL)
: Command request repeat system
: ASCII (Modbus ASCII, MEWTOCOL), binary (Modbus RTU)
in the Setup mode) is selected
Set value memory external
selection (
Open
Open
Closed
Closed
Set value memory external
selection (
Open
Open
Closed
Closed
(The terminator is not necessary or
120 or more on the PLC side.)
Modbus RTU
1
8
Yes (Even, Odd)
No parity
1 or 2
Contact input function: [50] in the Setup mode
OUT/OFF external
) selection 1 (
SV
SV2
SV3
Control output OFF
SV4
in the Setup mode) is selected
Contact input function: [50] in the Setup mode
OUT/OFF external
) selection 1 (
SV SV (Automatic control)
SV2 SV2 (Automatic control)
SV3
Manual control
SV4
When a transistor is used as an external
contact, use Max. 18V or more voltage.
61
MEWTOCOL (Slave)
1
7 or 8
Yes (Even, Odd)
No parity
1 or 2
OUT/OFF external
) selection 2 (
SV
SV2
Control output OFF
OUT/OFF external
) selection 2 (
(Automatic control)
Manual control
)
SV
)
SV