EAEDIP320B-8LW Datasheet, PDF (9/25 Pages) List of Unclassifed Manufacturers – CONTROL UNIT 320x240 WITH INTELLIGENCE

Specifications may be changed without
prior notice. Printing error reserved
EA eDIP320-8
Page 9
Request for buffer information
> ^{<DC2> 1}
< ^<ACK>
< ^{<DC2> 2}
I
bcc
send buffer
bytes ready
receive buffer
bytes free
bcc
<DC2> = 18(dec.) = $12 1 = 1(dez.) = $01
I = 73(dez.) = $49
<ACK> = 6(dec.) = $06
send buffer bytes ready = count of bytes stored in send buffer
receive buffer bytes free = count of bytes for free receive buffer
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
Protocol settings
> ^{<DC2> 3}
D
packet size for
send buffer
timeout
bcc
< ^<ACK>
<DC2> = 18(dec.) = $12 3 = 3(dez.) = $03
D = 68(dez.) = $44
packet size for send buffer = 1..128 (standard: 128)
timeout = 1..255 in 1/100 seconds (standard: 200 = 2 seconds)
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
<ACK> = 6(dec.) = $06
This command queries whether user data is
ready to be picked up an how full the display's
receive buffer is.
This is how the maximum package size that
can be sent by the display can be limited. The
default setting is a package size with up to 128
bytes of user data.
The timeout can be set in increments of 1/100
seconds.The timeout is activated when individual
bytes get lost. The entire package then has to
be sent again.
Request for protocol settings
> ^{<DC2> 1}
< ^<ACK>
< ^{<DC2> 3}
P
bcc
max.
packet size
akt. send
packet size
This command is used to query protocol
settings.
akt. timeout bcc
<DC2> = 18(dec.) = $12 1 = 1(dez.) = $01
P = 80(dez.) = $50
<ACK> = 6(dec.) = $06
max. packet size = count of maximum user data for 1 package (eDIP320-8 = 128)
akt. send packet size = current package size for send
akt. timeout = current timeout in 1/100 seconds
bcc = 1 byte = sum of all bytes incl. <DC2>, modulo 256
Repeat the last package
> ^{<DC2> 1}
R
bcc
< ^<ACK>
<
<DC1>
<DC2>
len
data...
bcc
<DC2> = 18(dec.) = $12 1 = 1(dez.) = $01
R = 82(dez.) = $52
<ACK> = 6(dec.) = $06
<DC1> = 17(dec.) = $11
len = count of user data in byte (without ckecksum, without <DC1> or <DC2>)
bcc = 1 byte = sum of all bytes incl. <DC2> and len, modulo 256
If the most recently requested package contains
an incorrect checksum, the entire package can
be requested again. The reply can then be the
contents of the send buffer (<DC1>) or the
buffer/protocol information (<DC2>).
Adressing (only for RS232/RS485)
> ^{<DC2> 3}
A select or deselect
adr
bcc
< ^<ACK>
<DC2> = 18(dec.) = $12 3 = 3(dez.) = $03
A = 65(dez.) = $41
select or deselect: 'S' = $53 or 'D' = $44
adr = 0..255
bcc = 1 byte = sum of all bytes incl. <DC2> and adr, modulo 256
<ACK> = 6(dec.) = $06
This command can be used to select or
deselect the eDIP with the address adr.