Hitachi Hidic EH-150 Applications Manual page 42

Preliminary Rev.03
6.1.2 Frame format
You need to make data, in conformity with the frame format that shows it in Figure 6.1.2 in the application
program of a host computer, in the case that it communicates EH-ETH and task cord. This data is dealt with
binary data.
Cautions
EH-ETH can deal with only binary data and can not deal with ASCII data.
(a) (b)
(a) Termination command
H00: Process corresponding to a requesting task code is executed.
HFF: The process corresponding to a requesting task code issued before is cut. If there is no requesting task
code, this command is ignored.(No process)
H01 to HFE: The received data is cleared (No process)
(b) Through no.
You can use it to manage the request task code what host sends and the response task code from EH-ETH. EH-
ETH will return a response task code with the sequence number of requesting task code. You can distinguish the
response for the requesting task code what host sent.
(c) LUMP address
See 6.2.1 for detailed information.
(d) Request/Response task code
See EH-150 application manual (NJI-280B(X) "Appendix 3 Task Code Specifications".
Caution
- CPU module sends busy response for (2), when it executes the procedure to a request task code (1) and receives next
request task code (2).
The contents of this manual might be changed without notice.
Item Name
(a) Through no.
(b) Termination command
(c) LUMP address
(d) Request/Response task code
(c)
Figure 6.1.2 Frame format
Transmit task code procedure execution and stop to CPU module.
Through number to add request task code
H series network address
H series communication command code
Host
Computer
(1)
(2)
(2)'
(1)'
6-2
Chapter 6 Task code communication
Size(byte)
1
1
4
Max. 244
(d)
EH-ETH EH-CPU448
(1)
(1)'
(1)