Data Delivery Devices VHF, UHF & ISM Wireless RTU RFScada 8ADI-9DO 4ADI-5DO User Manual

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 61 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990  

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 63 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Special Control Modes. 
The RFScada units allow remote signal routing of analog and digital signals. In some 
situations additional control modes are needed, for example controlling outputs depending on input 
conditions, or sequences of input conditions. Typically a PLC or similar control computer is used to 
provide this control ‘logic’. The RFScada...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 64 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Unit 31 Digital Input 3 is ‘active’ to run the toggling pump 1. (assign pump 1 relay to this input) 
Unit 31 Digital Input 4 is ‘active’ to run the toggling pump 2. (assign pump 2 relay to this input) 
 
  
Tank
RFScada Full Switch 
RFScada 
Pump 
Low Switch 
Error Alarm Out 
Error Alarm Out 
Complete, Standalone, Remote Pump & Tank Control System Using...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 65 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
 
Analog Pump(s) Control Mode (2)   
This mode is typically used to control the 
level in a tank, where the tank is equipped with 
an analog level transducer. Two analog ‘trigger’ 
levels are set by the operator by using the 
configuration program, one for the full tank level 
and another for the empty tank level. The tank is 
filled by one or more pumps,...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 66 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Tank
RFScada 
4-20mA 
Level 
Transmitte
r
RFScada 
Pump 
Error Alarm Out 
Error Alarm Out 
Complete, Standalone, Remote Pump & Tank Control System Using 
RFScada Analog Pump Control Mode 
Pump 
Error shutdown 
Switch (optional) 
Error shutdown 
Switch (optional)  

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 67 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990    
Analog Store Control Mode (3).   
  In some situations it may be required for the RFScada system to store (and preserve 
through power fails) analog values. In a typical application analog process values may be written via 
Modbus to an RFScada device, which outputs these values as normal to another device depending 
on its configuration. Rather than...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 68 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Mixed Operation with RFScada 2DI-4DO Models.   
  If fitted with the low power ISM radio modules the RFScada 8ADI-9DO and 4ADI-5DO units 
may communicate with the RFScada 2DI-4DO models, typically for systems that require limited inputs 
and outputs without analog signals in some locations. In this case any 2DI-4DO models will be pre-
configured at the...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 69 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Standalone ‘Master’ System with no slaves.   
  This mode allows remote control and monitoring of a single unit. Simply set the units 
configuration as a Master and disable all slave units. By using Modbus or the configuration program 
all the inputs and outputs on this unit may be monitored and controlled remotely, via the RS-232, RS-
485 or over a phone...

RFScada 8ADI-9DO/4ADI-5DO Manual Ver 3.6 Copyright ©2005 Data Delivery Devices LLC Page - 70 – Bartlesville OK Tel 918-335-3318      FAX 918-398-9990 
Comm Fail Override Mode.   
  Normally the RFScada devices will only maintain outputs when all of the units in a network are 
communicating correctly. If communications are lost then all remaining units still communicating will 
turn off all outputs (analog and relays) and the communication status relay and LED (by J11) will 
toggle. For most applications...