－
77
－
－
76
－
Communication
See “$R: Data reading/Parameter reading command” on P.74.
3. When the status of amplifier changes
(1) Host
→
Amplifier (Request for sending)
SOH
ENQ
Amplifier ID Host ID
(2) Amplifier
→
Host (Request of data)
SOH
STX #
C
8
1
0
3
*
*
*
*
ETX BCC
Host ID
Amplifier ID
Command
Data number
Reading data
(3) Host
→
Amplifier (Response of result)
SOH
ACK
Amplifier ID Host ID
(4) Amplifier
→
Host (Communication completion response)
SOH
EOT
Host ID
Amplifier ID
• The amplifier saves the status when executing request for sending, and emits the
above response when the status in receiving the next request for sending has
changed. Read data is the same as in reading data number 8103h.
• When the amplifier is powered on, in the case where request for sending is sent continu-
ously, data update request response is answered after initial request response is made.
4. Cases other than the above
(1) Host
→
Amplifier (Request for sending)
SOH
ENQ
Amplifier ID Host ID
(2) Amplifier
→
Host (Communication completion response)
SOH
EOT
Host ID
Amplifier ID
• The amplifier makes communication completion response because data is not
requested from the host, and the status of amplifier has not changed.
Example of data communication
• When power is turned on
Communication data is shown below in chronological order when request for sending is
executed in power-on for the amplifier. Initial request response at the first, and then data
update request response is answered from the amplifier. Then, if the status of amplifier
has not changed, only transmission completion response is answered. Shown below is the
status where the amplifier is connected with host ID = 01h (1), amplifier ID = 81h (129). It
is represented by ASCII characters. (Data in the parenthesis is hexadecimal ASCII code.)
Host
→
Host
→
Host
→
Host
→
Host
→
Host
→
Host
→
(1) Request for sending
(2) Initial request response
Amplifier
←
SOH
(01h
)
8
(38h
)
1
(31h
)
0
(30h
)
1
(31h
)
ENQ
(05h
)
(3) Request for sending
(4) Data update request response
1
(31h
)
0
(30h
)
1
(31h
)
ACK
(06h
)
(5) Request for sending
(6) Transmission completion response
SOH
(01h
)
0
(30h
)
1
(31h
)
8
(38h
)
1
(31h
)
STX
(02h
)
#
(23h
)
SOH
(01
)
8
(38
)
I
(49h
)
9
(39h
)
9
(39h
)
9
(39h
)
9
(39h
)
0
(30h
)
0
(30h
)
0
(30h
)
0
(30h
)
ETX
(03h
)
BCC
(6Bh
)
1
(31h
)
0
(30h
)
1
(31h
)
ACK
(06h
)
SOH
(01h
)
0
(30h
)
1
(31h
)
8
(38h
)
1
(31h
)
EOT
(04h
)
SOH
(01h
)
8
(38h
)
1
(31h
)
0
(30h
)
1
(31h
)
ENQ
(05h
)
SOH
(01h
)
0
(30h
)
1
(31h
)
8
(38h
)
1
(31h
)
STX
(02h
)
#
(23h
)
SOH
(01
)
8
(38
)
C
(43h
)
8
(38h
)
1
(31h
)
0
(30h
)
3
(33h
)
0
(30h
)
0
(30h
)
0
(30h
)
2
(32h
)
ETX
(03h
)
BCC
(69h
)
SOH
(01h
)
0
(30h
)
1
(31h
)
8
(38h
)
1
(31h
)
EOT
(04h
)
SOH
(01h
)
8
(38h
)
1
(31h
)
0
(30h
)
1
(31h
)
ENQ
(05h
)
SOH
(01h
)
0
(30h
)
1
(31h
)
8
(38h
)
1
(31h
)
EOT
(04h
)
Amplifier
←
Amplifier
←
Amplifier
←
Amplifier
←
Amplifier
←
Amplifier
←
