I’m using Acromag’s EtherStax and some BusWorks Ethernet Modules and can’t seem to view the Test Page with my browser. I can ping the device and am able to view the Network Configuration Page plus some other pages. What can I do?

Answer: Acromag’s EtherStax products and select BusWorks Ethernet Modules use Java for the Test Pages (and other select pages).  First, check to see if you have Java installed on your computer. Go to Add/Remove Programs to see if Java is installed.  If Java is installed, check to see if it’s enabled thru your browser (ie; Internet Explorer 8) by doing the following.  On the top Tool Bar, click on: Tools/Internet Options/Security/Custom Level.  Then, scroll down to find Java VM / Java permissions.  Click on any setting, except Disable Java, to restore the Test Page.  If you still have problems, you may have a firewall or anti virus security protection that is also blocking things.  Here's a good website to test if your Java is working okay:  http://www.java.com/en/download/help/testvm.xml

How can I make IE 8 or Firefox 3 run faster with my BusWorks Ethernet I/O module?

IE 8 and Firefox 3 have changed a configuration setting called "Maximum number of connections to server" from a value of  two to six. This causes a flood of requests to some of the Busworks 9xxEN Ethernet Modules and may slow down web page loading (most noticeably in loading buttons). To fix this issue, please see Acromag's Service Bulletin 8500-871.

The mirrored registers for the 982EN/983EN, 989EN, and ES2113's do not support the "Preset Multiple Register" Modbus function. Help.

You are likely getting an error message from the Momentum PLC if trying to do a block write into the 42000 mirrored address space on the 982EN/983EN modules. However, all the Acromag units support other 40000 registers which should work fine and offer faster performance.

Model 982EN/983EN-4012: Use Register 40011. This is a single 16-bit register that will drive all 12 outputs in a single write command.

Model 989EN-4xxxx: Use Register 40040. This is a single 16-bit register that will drive all 16 outputs in a single write command.

Model ES2113-xxxx: Use Registers 40060 through 40065. These six 16-bit registers will drive all 96 channel outputs on the ES2113. Each register drives a port of 16 channel outputs. This address space also supports the "Preset Multiple Register" command, so you can do a block write to all six registers if needed.