Ps : Parameter Set Number; Index Parameter Index Number - Casio PX-110 Function Manual

iiB (Binary) = index length
"index length (iiB)" indicates the index field length, which is always the following, regardless of the "act" (Action)
value.
iiB......index byte size - 1
"act" Value
00, 01
02, 04
03, 05
07
dddddB (Binary) = data length
"data length (dddddB)" indicates the size of each data unit (parameter) in the "data" field.
The data length differs according to Message Type, as shown below.
"act" Value
00
02, 04
01, 03, 05, 07 IPR, BDR, HDR or Control 0
15.2.9

9....ps : Parameter Set Number

Format: 0nnnnnnnB (LSB) 0mmmmmmmB (MSB)
This field is a 2-byte (LSB, MSB) value indicating the number of the parameter set (00mmmmmmmnnnnnnnB,
binary) being transferred.
15.2.10

10...index Parameter Index Number

When act = 00(IPC) or 01(IPR)
Format: 0iiiiiiiB
This field contains a supplementary number that points to data when parameters are arrayed. The meaning is
different for each parameter, and the length can be anywhere from one to four bytes.
Even when parameters have the same IDs, for example, as when the parameters also have preset numbers, part
numbers, and key numbers, parameters can be distinguished by specifying these values with an "index".
When act = 02(BDS) or 04(HDS)
Format: 0nnnnnnnB
Message Type
IPC, IPR
BDS, HDS
BDR, HDR
Control
Message Type
IPC
BDS, HDS
(0jjjjjjjB)
0NNNNNNNB
iiB
index byte size - 1
(Example: When 4 bytes = 3)
2 = 10B
(Packet Number = 3 bytes)
0 = 00B
(This field is empty, but its length is indicated as 0.)
0 = 00B
(The length of this filed is 1 byte.)
dddddB
data bit size - 1
(If 1 bit = 00000B; if 32 bits = 11111B)
data bit size - 1 = 01111B
(Transfer is in 16-bit units, so)
(0kkkkkkkB) (0lllllllB)
0LLLLLLLB
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