Hitachi S10mini Hardware Manual page 40

Send/receive area of READ or WRITE command:
15 8 7
2 ————– 2 2 ————– 2
MDL SID
NET SVC
protocol_ID version
command_ID status_ID
request_ID UL_data_len
block_num address_len
address
data_len
data
address_len
address
data_len
data
0
MDL: Module No. (= /00 for main module; = /01 for sub-module)
SID: Station ID (/01 to /1F)
NET: Net No. (= /00 for N1; = /01 for N2)
SVC: Service code
SVC
/32
protocl_ID: Indicates protocol registration or non-registration. Set /00.
version: Indicates the protocol version. Set /00.
command_ID: Indicates the command identification code defined for each
Code
/11
/12
status_ID: Indicates a response to the command. Set /00 on command
transmission.
request_ID: Indicates data for identifying the sequence of the command
that retains the contents of the service until the service is
completed.
UL_data_len: Set the number of UL_data bytes.
block_num: Set the number of data blocks following block_num.
address_len: Set the number of bytes of the address field.
7
Attribute
Attribute
/00
/01
/10
/11
address: Set the transmission/reception destination address. Store this
address, starting from the lowest-order byte.
data_len: Set the number of bytes of the data field.
data: Indicates transmitted or received data setting.
4-13
Service name
Data write service
protocol.
Command name
WRITE command
READ command
6 5 ———————————– 0
Byte length of address field
The address field is a symbol (character string).
The address field is a numeric value.
Not used. (Do not set this attribute.)
4 USER GUIDE
Meaning