Panasonic FP7 Series Command Reference Manual page 816

15.4 SEND (MEWTOCOL Master / MODBUS Master)
(Note 1) When the destination unit is FP7, only global devices can be specified. (Local devices cannot be
specified.)
(Note 2) In the MODBUS mode, this cannot be specified as the receiver.
■
Available bit devices (●: Available)
Operand
X
S ●
n
D1
(Not
(Note 1)
D2
e 2)
D3
(Note 1) When the receiver is FP7, only global devices can be specified. (A local device cannot be specified.)
(Note 2) In the case of MODBUS and MEWTOCOL-COM, a bit device cannot be specified.
■
Outline of operation
● Commands are sent from the communication port of the unit to perform the data
transmission with external devices. Message in accordance with the protocol is automatically
formulated by PLC. The user program only has to specify the station number and the
memory address, and execute the SEND/RECV instruction, to carry out reading and writing.
● Select a communication mode in the configuration menu of the tool software FPWIN GR7.
● When the SEND instruction is executed, data are read from the device in the master unit,
starting with [S], and stored in the address starting with [D2] of the partner unit.
● The transfer method (register transfer/bit transfer) varies according to the device types that
are specified by [S] and [D2].
● The amount of sent data [n] is specified in words for the register transfer, and in the number
of bits for the bit transfer.
● The execution result code is stored in the one-word area of the master unit that is specified
by [D3].
■
Setting the amount of sent data [n]
Transfer Communication
method Mode
MEWTOCOL-COM 1 to 507 words
Register MEWTOCOL-DAT
transfer
MODBUS
MEWTOCOL-COM Fixed at 1 bit
Bit transfer
15-22
Bit device
Y R L T C
● ● ●
(Not
● ●
e 2)
Amount of sent
data n
1 to 1020 words
1 to 2038 words
1 to 127 words
P E SR IN OT
Note
Connection setting: MEWTOCOL
Communication type setting: Connect with FP2 ET-
LAN
Connection setting: MEWTOCOL
Communication type setting: Do not connect with
FP2 ET-LAN
Use MODBUS command 15 (to write to WY or WR)
and command 16 (to write multiple words to DT).
During MEWTOCOL-COM, WCS command is used.
Specification of bit of
word device
DT.n LD.n
● ●
WUME-FP7CPUPGR-12
Index
modifier
●
●