2.16 Details on Protocols
Extended MEMOBUS Protocol
2-390
Reading the States of Bits Using 32-bit Addressing
(LL)
(LH)
(HL)
(HH)
(H)
(L)
(LL)
(LH)
(HL)
(HH)
(H)
(L)
7••••••••••0
7••••••••••0
Command
Length: 0C hex
MFC: 43 hex
SFC: 41 hex
CPU number
Not used.
Register type
Not used.
First address
Number of bits
Response
Length: 06 hex +
((number of bits + 7)/8)
MFC: 43 hex
SFC: 41 hex
CPU number
Not used.
Register type
Not used.
States of first 8 bits
States of next 8 bits
States of next 8 bits
States of next 8 bits
Set the length of the command.
Always 43 hex.
The sub function code to read the states of bits is 01 hex.
Specify 4 bits each for the destination CPU number and the source CPU number.
Set the first address of the bits to read.
Set the number of bits to read.
Set the length of the response.
Always 43 hex.
The response will contain the sub function code that was set in the command.
Specify 4 bits each for the destination CPU number and the source CPU number.
This contains the states of the bits that were read.
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