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MODBUS

Master

Slave

TCP Client

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Software Purchase Instructions

Step 1) Make payment

Â Â Secure Payments Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â PayPal account not required.

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Purchase just 1 of the 3 available programs

Things To Check When Buying A Used Car From Dealer May 2026

: Request a free CARFAX or AutoCheck report from the dealer. Confirm the VIN on the car matches the report to check for past accidents, title issues (like salvage or flood), and odometer discrepancies.

Conduct a thorough walk-around and pop the hood to check for common red flags: How to Inspect a Used Car to Avoid Costly Repairs

When buying a used car from a dealer, your goal is to verify the vehicle's history, mechanical health, and the total cost of ownership before signing any contracts.

: Ask for detailed service logs. Consistent records of oil changes and routine servicing suggest the car was well cared for.

Purchase 2 of the 3 available programs:

Conduct a thorough walk-around and pop the hood to check for common red flags: How to Inspect a Used Car to Avoid Costly Repairs

When buying a used car from a dealer, your goal is to verify the vehicle's history, mechanical health, and the total cost of ownership before signing any contracts.

: Ask for detailed service logs. Consistent records of oil changes and routine servicing suggest the car was well cared for.

Purchase all 3 available programs

Quantity	Simply Modbus RTU/ASCII Master & Simply Modbus RTU/ASCII Slave & Simply Modbus TCP Client
1 license for 1 user or 1 PC for 3 programs	$162
2 licenses for 2 users or 2 PCs for 3 programs	$288
site license unlimited installations at one location within a single company for 3 programs	$585

Prices in US dollars.

Step 2) Receive license by email

After payment is made you will receive an email from Paypal with the transaction details.
A second email from with the license key code will follow.

Help stop server filtering, which is a common occurrence.
Please add to your address book to help.
The license message will be sent to second email addresses if requested.

License are normally sent out within an hour during office hours
but may take overnight due to time zone differences. Your patience is appreciated.

Office Hours are Monday thru Friday, 8AM - 4PM MDT (GMT-0700)

Step 3) Enter the license in the program

The license is entered in the program by using the 'Enter Key' button on the demo mode startup screen. This removes all polling limitations and the startup screen.

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"Count me as simply delighted with Simply Modbus...

...it was up to me to figure it out on my own. And I did, in about 2 minutes with Simply Modbus...

... simply a bargain, a super package for the price."Â more....

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"It works great in both ASCII and RTU mode and understands 32-bit Enron extensions..."

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