Calculating Number Of Input/Output Bytes As Example - Hitachi S10mini LQS070 Hardware Manual

7.11.2 Calculating number of input/output bytes as example

The calculation examples in this section indicate how the number of input/output bytes
varies with the number of mount base slots and rotary switch settings.
(1) 4-slot mount base, 65 points, no error information addition to be applied, and FREE
setup
<Configuration example>
The employed calculation formula corresponds to No. 1 in Table 7-10. Therefore, the
number of bytes are as follows:
Number of input bytes = number of mount base slots × number-of-points setting/8
Number of output bytes = same as the number of input bytes
(2) 8-slot mount base, 128 points, error information addition to be applied, and FREE
setup
The example below shows the setting that maximizes the number of input/output bytes.
<Configuration example >
The employed calculation formula corresponds to No. 2 in Table 7-10. Therefore, the
number of bytes is calculated as follows:
Number of input bytes = number of mount base slots × number-of-points setting/8
Number of output bytes = number of input bytes + 4 = 132 bytes (66 words)
=4 × 64/8
=32 bytes (16 words)
= 8 × 128/8
= 128 bytes (64 words)
− 79 −
7 COMMUNICATION FUNCTION
<Settings>
• 64 points
• No error information addition
to be applied
• FREE
<Settings>
• 128 points
• Error information
addition to be applied
• FREE