YASKAWA MP900 Series - Page 42

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System Startup and Setup
4.2.2
Calculating Communications Cycle Times
4-8
4
3. Slaves with 8 bytes or less of both input and output data
[94 + 8(No + Ni)] × Tb + 600[µs]
4. Slaves with 8 bytes or more of output data
[111×TRUNC(No/7)] × Tb
+ [94 + 8 × MOD(No/7)] × Tb
+ 300 × [TRUNC(No/7) + 1][µs]
Note: When MOD(No/7) = 0, the 3rd line of the equation will be " + 300 ×
TRUNC(No/7)."
5. Slaves with 8 bytes or more of input data
[111 × TRUNC(Ni/7)] × Tb
+ [94 + 8 × MOD (Ni/7)]×Tb
+ 300 × [TRUNC(Ni/7) + 1] [µs]
Note: When MOD(Ni/7) = 0, the 3rd line of the equation will be " + 300 ×
TRUNC(Ni/7)."
6. Slaves with 8 bytes or more of both input and output data
[111 × TRUNC(Ni/7)] × Tb
+ [94 + 8 × MOD(Ni/7)] × Tb
+ 300 × [TRUNC(Ni/7) + 1]
+ [111 × TRUNC(No/7)] × Tb
+ [94 + 8 × MOD(No/7)] × Tb
+ 300 × [TRUNC(No/7) + 1] [µs]
Note: 1. When MOD(Ni/7) = 0, the 3rd line of the equation will be " + 300
× TRUNC(Ni/7)."
2. When MOD(No/7) = 0, the 6th line of the equation will be " + 300
× TRUNC(No/7)."
7. Slaves with 8 bytes or less of input data and 8 bytes or more of output data
[47 + 8 × Ni] × Tb
+ 300
+ [111 × TRUNC(No/7)] × Tb
+ [94 + 8 × MOD(No/7)] × Tb
+ 300 × [TRUNC(No/7) + 1]
Note: When MOD(No/7) = 0, the 5th line of the equation will be " + 300 ×
TRUNC(No/7)."
8. Slaves with 8 bytes or more of input data and 8 bytes or less of output data
[111 × TRUNC(Ni/7)] × Tb
+ [94 + 8 × MOD(Ni/7)] × Tb
+ 300 × [TRUNC(Ni/7) + 1]
+ [47 + 8 × No] × Tb
+ 300
Note: When MOD(Ni/7) = 0, the 3rd line of the equation will be " + 300 ×
TRUNC(Ni/7)."