Data Area Formats - Hitachi HSC-2100 Hardware Manual

5.2.3 Data area formats

(1) Formats for analog input modules
(a) Format used in remote I/O transfer -- for LWA400 to 404, LWA421 to 423, LWA430,
LWA450, LWA460, LWC400 to 402
Data area: Registered data area (or EW area)
1st word
2nd word
3rd word
4th word
• If an input value overflows in the data area, the result will be as follows:
For positive-value overflow: 2,047
For negative-value overflow: -2,048
• If an input value is insignificant, it is automatically set to H8000.
(b) Format used in remote I/O transfer -- for LWA435
Data area: Registered data area (or EW area)
1st word
2nd word
3rd word
4th word
• If an input value overflows in the data area, the result will be as follows:
For positive-value overflow: 8,191
For negative-value overflow: -8,191
• If an input value is insignificant, it is automatically set to H8000.
15 11 10
2 2 2
S ··· S Channel 0 input data
S ··· S Channel 1 input data
S ··· S Channel 2 input data
S ··· S Channel 3 input data
Sign Data: Values in the range -2,048 to 2,047
15 13 12
2 2 2
S ··· S Channel 0 input data
S ··· S Channel 1 input data
S ··· S Channel 2 input data
S ··· S Channel 3 input data
Sign Data: Values in the range -8,191 to 8,191
(the value -8,192 is not displayed)
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5 MAKING USE OF MODULES
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