Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 469

Conversion Instructions
7-20-9 ASCII-TO-HEXADECIMAL – HEX(––)
Limitations
Description
Digit Designator
Ladder Symbols
HEX(––) @HEX(––)
S
Di
D
This instruction is available in the CPM2A/CPM2C/SRM1(-V2) only.
Di must be within the values given below.
All source words must be in the same data area.
Bytes in the source words must contain the ASCII code equivalent of hexadeci-
mal values, i.e., 30 to 39 (0 to 9) or 41 to 46 (A to F).
DM 6144 to DM 6655 cannot be used for D.
When the execution condition is OFF, HEX(––) is not executed. When the
execution condition is ON, HEX(––) converts the designated byte(s) of ASCII
code from the source word(s) into the hexadecimal equivalent and places it into
D.
Up to 4 ASCII codes may be converted beginning with the designated first byte
of S. The converted hexadecimal values are then placed in D in order from the
designated digit. The first byte (rightmost or leftmost 8 bits), the number of bytes
to be converted, and the digit of D to receive the first hexadecimal value are
designated in Di. If multiple bytes are designated, they will be converted in order
starting from the designated half of S and continuing to S+1 and S+2, if
necessary.
If more digits are designated than remain in D (counting from the designated first
digit), further digits will be used starting back at the beginning of D. Digits in D
that do not receive converted data will not be changed.
The digits of Di are set as shown below.
Digit number: 3 2 1 0
Operand Data Areas
IR, SR, AR, DM, HR, TC, LR, #
S
IR, SR, AR, DM, HR, TC, LR, #
Di
D
IR, SR, AR, DM, HR, LR
Specifies the first digit of D to be used (0 to 3).
Number of bytes to be converted (0 to 3)
0: 1 byte (2-digit ASCII code)
1: 2 bytes
2: 3 bytes
3: 4 bytes
First byte of S to be used.
0: Rightmost 8 bits (1
1: Leftmost 8 bits (2
Parity 0: none
1: even
2: odd
Section 7-20
S: First source word
Di: Digit designator
D: Destination word
st
byte)
nd
byte)
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