Hitachi L100DN DeviceNet Series Addendum Read This First Manual page 56

56
Network Control and Monitoring
Polled I/O Data Map, Inverter Inputs – The polled I/O for the inverter maps to four
words (16 bits each) input data, and four words output data. In this section, we are
concerned with the four words the host computer uses to control the inverter.
The following Polled I/O table shows how the host computer's control bits and reference
data (output freq. / accel / decel) are organized. Word 0 (lower byte) contains discrete
(individual) bits (used as flags). Data words 1, 2, and 3 contain values (used as scalar
numbers). When the network is active, polled I/O data is automatically updated on each
network scan.
Byte
0
1
2
3
4
5
6
7
NOTE: P_46 = 20 and P_46 = 21 settings provide additional consumed data configura-
tions (not used in this example). See "Polled I/O Configurations" on page 66.
The following table defines individual bits of the control byte.
Bit
0 FW Run
1 RV Run
2 Fault Reset
3 Free Run Stop
4
5 Network Control
6 Network Reference
7
Inverter Consumed Data, (Host) Output Instance (P_46) = 100
Bit 7 Bit 6 Bit 5
— Network Network
Refer- Control
ence
Output frequency (low byte), host override for F_01 value
Output frequency (high byte), host override for F_01 value
Acceleration time (low byte), host override for F_02 value
Acceleration time (high byte), host override for F_02 value
Deceleration time (low byte), host override for F_03 value
Deceleration time (high byte), host override for F_03 value
Inverter Consumed Data, Control Byte
Name
Stop
Stop
—
Run/Stop control is local to
inverter
Output freq. / accel / decel is
from F_01, F_02, F_03
—
Bit 4 Bit 3 Bit 2
— Free run Fault
Stop Reset
—
Bit = 0
FW Run command
RV Run command
— Reset the inverter, clear trip
— Cause motor to free run
(coast) and stop
—
Run/Stop control is from
network host polled I/O
Output freq. / accel / decel is
from network host polled I/O
—
Bit 1 Bit 0
RV Run FW Run
Bit = 1
—
—