Hitachi EH-150 Series - Hi-Protocol Message Configuration

Appendix
A - 8
A.3.2 Hi-Protocol message configuration
The message format of Hi-Protocol is shown below.
 Standard H protocol (Transmission control procedure 1)
S
T
X
TM
L
U
M
P
Task code
Sum
C
R
1 byte
ASCII code
Max. 503 byte
 Simple H protocol (Transmission control procedure 2)
S
T
X
TM
Task code
Sum
C
R
ASCII code
Max. 495 byte
 Standard H protocol with station No. (Transmission control procedure 1)
S
T
X
TM
St. No.
L
U
M
P
Task code
Sum
C
R
ASCII code
Max. 505 byte
 Simple H protocol with station No. (Transmission control procedure 2)
S
T
X
TM
St. No.
Task code
Sum
C
R
ASCII code
Max. 497 byte
« Note »
 LUMP is a network address to identify CPU from a host. Since EH-SIO does not support to access remote CPU,
LUMP should be always "FFFF0000."
 When communicating by transmission control procedures 2, a network address (LUMP) is not used.