Danfoss VLT DeviceNet MCA 104 Programming Manual page 18

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4.5.3 Bus Reference Value under Instances
100/150 and 101/151
The frequency reference value is transmitted to the
frequency converter in the form of a 16-bit word. The
value is transmitted as a whole number (-32767 to
+32767). Negative figures are formatted by 2's
complement.
4 4
Master ⇒ slave
CTW
Table 4.9 Speed Reference Value
The bus reference has the following format:
100% = 4000 hex
Parameter 3-00 Reference Range = 0 [ref
16384 (4000 hex) ~ 0 ⇒ 100%
Parameter 3-00 Reference Range = 1 [- ref
-16384 (C000 hex) ⇒ +16384 (4000 hex) ~ -100% ⇒ +100%
4.5.4 Actual Output Frequency under
Instances 100/150 and 101/151
The value of the actual output frequency of the frequency
converter is transmitted in the form of a 16-bit word. The
value is transmitted as a whole number (-32767 to
+32767). Negative figures are formed by 2's complement.
Slave ⇒ master
STW
Table 4.10 Actual Output Frequency
The actual output frequency has the following format:
-32767 to +32767.
-16384 (C000 hex) corresponds to -100%, and 16384 (4000
hex) corresponds to 100%.
16
®
VLT DeviceNet MCA 104
16 bit
Speed reference RPM
⇒ ref ] 0 ⇒
MIN MAX
⇒ + ref
]
MAX MAX
16 bit
Actual reference RPM
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