Ping Request Instruction (Pingreq) - Panasonic FP7 User Manual

7.3.2 PING Request Instruction (PINGREQ)

Requests to send PING
 Instruction format
R0
 Operation unit (i)
There is no operation unit.
 List of operands
Operand Description
S
Number of requests to send PING (Settable range: 1 to 10 times)
D Starting address storing the result of PING request
 Available devices (●: Available)
16-bit device
Operand
WX WY WR
S ● ● ●
D ● ● ●
 Outline of operation
• This instruction is dedicated to ET-LAN.
• Requests to send PING to the destination IP address of a specified connection for the
number of times specified by [S].
• Stores the request result of PING in the area starting with [D].
• The timeout period for one PING response is one second (fixed).
• The size of sent/received data is 56 bytes (fixed).
• This instruction is used for confirming the operation status of a communication relay device.
When the operation status cannot be confirmed, the power supply can be reset from the
PLC.
• Use the UNITSEL instruction to specify connections.
• When a destination IP address is not specified, an error occurs.
• When an Ethernet task is initialized while requesting PNG, 0 is put in all [D] which stores
results.
• Use the ETSTA instuction to confirm the target IP address for the PING request.
pPINGREQ
WL WS SD DT LD UM
● ● ●
● ● ●
7.3 Communication Instruction
U3
S
32-bit
Integer
device
TS TE
WI WO IX K
CS CE
DT10
D
Real
num- String
ber
U H SF DF " "
● ●
Index
modifier
●
7-23