Posted by aTerese on Tue, Jul 26, 2011 @ 7:23 AM
When setting up the Modbus RTU Master/Slave over an RS485 network, a three-wire cable is required to connect back to the interface converter. The Simple NULL Modem cable with external +24 vdc power is recommended, but the Allen-Bradley 1761-CBL cable is also functional. To begin, plug the cable to the round eight-pin mini DIN receptacle and set the P10 Jumpers for RS-485 on the Catalyst.
Parametric changes are also required within the RSLogix 500 and Alarmware to synchronize the Modbus Drivers. Here are the steps:
1. Connect the MicroLogix to your PC using the required 1761-CBL cable
2. Launch RSLogix 500 Software
3. Set the Communications Driver to the Modbus RTU Slave and select the PLC data files
Next you need to setup communications for the Catalyst:
1. Launch the Alarmware for Cataylist 1.87
2. Connect the Catalyst to your PC
3. Modify the device settings in Alarmware. Once the window is open, select the “Modbus Port” tab and select the speed best suited for your application.
4. Modify the channel settings in Alarmware—channels one to 256 are available.
To finish integrating the system, you need to construct the Source Network Address (SNA). This comprises the Net/Node/Address. Net is either zero or one—zero is used for local physical I/O and one is used for remote PLC I/O—and node is the address of the PLC you wish to communicate. Lastly, the address points to the Modbus location mapped to the PLC.
Once the channels are configured, you are ready to assign them to your project.
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RSLogixPosted by aTerese on Thu, Jul 21, 2011 @ 6:30 AM
RACO’s Guard-It is a low-cost autodialer with flexible features for dependable alarm and remote monitoring. Users can configure four universal input channels for analog or digital signals, which are field-programmable at the system’s control panel.
Upon alarm detection, the system calls a list of up to eight phone numbers. Respondents are given the station’s identity and specific alarm condition by a prerecorded voice message.
In addition to standard office phones, the alarm sequence can also call pagers, cell phones or voice mail. Respondents can press a button on the phone’s ke... Continue Reading
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Guard-It,
Guard-It autodialer,
remote monitoring,
voice alarm messagesPosted by aTerese on Tue, Jul 19, 2011 @ 4:30 AM
RACO’s Support Center is now available through your iPhone, iPad or Android for easy and convenient onsite access. Now, workers can browse content while in the field and get answers to more than 500 frequently asked questions. Simply type in www.racomobilesupport.com for access.
The mobile website functions similarly to the original—just search for questions using the “Support Center-Answer” tab, set up a user profile through “My Page” or create your own question with the “Ask a Question” feature. Additionally, users have access to manuals and specs, product info, installati... Continue Reading
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Autodialer Support CenterPosted by aTerese on Fri, Jul 15, 2011 @ 5:08 PM
Posted by aTerese on Tue, Jul 12, 2011 @ 4:20 AM
The Verbatim Gateway system—interfaced with an Allen-Bradley MicroLogix family of PLCs containing a native Modbus RTU Slave driver—performs alarm and monitoring functions with existing wiring to PLCs as inputs via data communications.
In order to facilitate data communications via Modbus RTU Master/Slave over RS232 data interface, RACO provides a NULL Modem serial cable, VAB-1. This cable has the RJ-45 connector required for the system.
Below are instructions on how to integrate MicroLogix to Verbatim Gateway via Modbus Protocol over RS232.
Communication setup for Allen-Bradley Mi... Continue Reading
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