Networking multiple HMI's on a phone line


Thread Starter

Naeema Halim

My question is

How can we network multiple HMI's present in separate buildings on a phone line..?

Waiting for a prompt reply!
Naeema Halim
Application Engineer
Business Unit: IT Plant Solutions.
Information Technology Services (ITS)
Plant Solutions
SIEMENS Pakistan Engineering Company.
Address: 64-C-III, Gulberg-III, Lahore 54660 Pakistan.
Phone: +92 42 587 1010-16 Fax: +92 42 571 7798
Email: <[email protected]>

Eduardo Manuel C. Cipriano


Use TCP/IP and a modem of course try checking first if your HMI has a capability to communicate under this protocol.........

[email protected]
Eduardo Manuel C. Cipriano
Sr. Systems Engr.
Systems Engineering Department
Yokogawa Phils. Inc.

Ali Khorramshahi


There are many methods that can be implemented for Networking multiple HMI's. The methods have a direct relationship with the SCADA HMI software.

For example:

1) Some HMI software such as the software that we use support a dialup network. It is inherent of the application architecture.

2) We have also developed a dialup networking module to enable different applications to be networked. However, the application HMI must have APIs so that we could integrate our module with the HMI.


Ali Khorramshahi
DigitaLogic, Inc.

3600 Clipper Mill Road, Suite 211
Baltimore, MD 21211

Tel: 410-662-9500 Ext. 102
Fax: 410-662-9400

Email: [email protected]