Panasonic FP7 User Manual page 117

 Execution result code [D2]
Code Description
H0 Normal end
1: The communication port is being used in
H1
the master communication.
The communication port is being used in
H2
the slave communication.
The number of master communication
H3 instructions simultaneously used is
exceeded.
H4 Transmission timeout
H5 Response reception timeout
H6 Reception error (Note 1)
H7: I/O allocation shortage error (Note 2)
H8 The send buffer is being used.
H9 Own unit unset error
H21 NACK
H22 WACK
H23 The unit number duplicate error occurs.
(Note 1): It occurs when an abnormal telegram is received.When the format of the header for each protocol is
abnormal, the reception data will be discarded and the response reception will time out.
(Note 2): It occurs when the communication control I/O relays corresponding to the communication port (master
communication clear to send flag, master communication send active flag, master communication send done
result relay)are not allocated as I/O words of the CPU unit in the I/O map. It occurs only when the number of
user connections of ET-LAN is expanded and this instruction is executed specifying that expanded connections.
 Precautions during programming
• Describe UNITSEL instruction immediately before RECV instruction and specify the slot
number of FP7 MW Unit in [S1] and 0 in [S2].
• For FP7 MW Unit, RECV instruction executes the transmission and reception by
MEWTOCOL-DAT (fixed).
• For the FP7 CPU Unit, up to 16 instructions can be executed simultaneously for the
transmission to different COM ports and connections (the total number of SEND, RECV,
pGPSEND, GPTRNS and pPMSET instructions simultaneously executed). For the FP7 MW
Unit, only one of those can be executed for one unit.
9.1 Communication Instructions
Code Description
H24 Transmission format error
H25 MW hardware error
H26 The unit number setting error occurs.
H27 NOT support
H28 No response
H29 MW hardware error
H30 Transmission timeout error
H30
MW hardware error
-H39
H41 Format error
H60 Parameter error
H61 Data error
H91 Missing expansion slave unit error
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