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EVO/
™ECM-Modbus RTU
Series 2
Page 15
Application Guide
©2020 All Rights Reserved
Evolution Controls Inc.
San Diego, CA USA
High Byte
…delays
Reply Delay
The RTU may reply to a poll from the master before the master is turned around and
ready to receive. Setting these bits inserts a delay before the RTU replies to a poll. Set
this value as low as possible.
0=0ms, 1=8ms, 2=12ms, 3=16ms, 4=20ms, 5=24ms,6=28ms, 7=32ms
B i t 0 - 2
Next Message Delay
At the end of a transaction, the RTU immediately listens for new data. In some
applications, the line may ring, or have other noise. Setting this bit causes the RTU to
wait for three-byte times before receiving data. Leave this bit clear if possible.
Bit 3
RPM Alarm Hysteresis
RPM Alarm hysteresis is the tolerance band to avoid alarm chattering.
0 = 50 RPM, 1 = 100 RPM
Bit 4
Pilot Pulse
Some EC motors detect Pilot Pulse (Autoswitch) from the controller. Pilot Pulse provides a
49us pulse at a minimum and maximum signal, so the motor knows the controller is
connected.
Bit 5
Lock
Set this bit to lock address & baud rate registers out from modification
Bit 6
