TXAM Pumps SPC1000 - Modbus Timer Mode Configuration; Cycles per Minute Mode Setup; ON;OFF Timer Mode Setup

Title: SPC1000 Basic Pump Controller User Manual
Page: 5 of 7
Doc # 10-000-106
Revision: 2
Date: 04/09/2020
Reproduce of this Manual in whole or part, by any means, for any purpose is prohibited. Additional copies may be obtained by contacting
TXAM Pumps QA Department.
When you read the holding register setpoint temperature via Modbus, if it has not been changed from
its initial condition data will be in the low byte, once changed the value is in the high byte during read
back.
Timer Mode Setup – Cycles per Minute
With Timer in Modbus Mode, set the following registers as follow:
• Holding register 40000 as 0x00
Set timer mode to cycles per minute
•
Holding register 40001 as 0x0205
1
st
byte = 05

05 x .5 sec = 2.5 sec pump on time
2
nd
byte = 02  2 cycles per minute
• Coil register 00000 as 0x1
Start operation
Timer Mode Setup – ON/OFF Timer
With Timer in Modbus Mode, set the following registers as follow:
• Holding register 40000 as 0x01
Set timer mode to On/Off timer
• Holding register 40001 as 0x1050
1
st
byte = 0x50

80 x .5 sec = 40 sec pump off time
2
nd
byte = 0x10

16 x .5 sec = 8 sec pump on time
• Coil register 00000 as 0x01
Start operation