December 2001 Data Transfer by PLC 8 – 39
Module 9111 Receive a message via LSV2
Module 9111 reads a message (double word or string) that has been received
from a host computer connected by LSV2 protocol.
The message must be transmitted from the host by the LSV2 command
“M_PC<msg.l>”.
Call:
PS B/W/D/K <Data type>
0: Binary data double word
1: String
PS B/W/D/K <Target address>
With binary: Number of the double word (0 to 1020)
With string: Number of the string
CM 9111
PL B/W/D <Error code>
0: Message was read
1: No connection to host
2: No message of this type in receiving buffer
3: Incorrect data type (not 0 or 1)
4: Incorrect target address
Error recognition:
Marker Value Meaning
M4203 0 Message was received
1 Error code in W1022
W1022 2 Incorrect data type
4 No double word address, or incorrect string number
11 String too long
13 No connection
15 Transmit buffer not empty
16 Receiving buffer empty
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