Panametrics PanaFlow MV80, User Manual, Page: 74 / 184

Chapter 2. Installation
62 PanaFlow™ MV80, MV82 & MV84 User’s Manual
Corporate gateways can have additional security enhancing measures, like sourcing. Sourcing addresses only allow
access from certain individual IPs or networks. If security concerns are an issue, you may limit access to the meter
using encrypted protocol only: port 443, https. On special request VortexInst can add special capability of Access
Control List (ACL) to insecure by definition Modbus protocol. Using ACL user may define number of hosts or networks
from which connection to Modbus port 502 can be accepted. Normally this function can be implemented in
corporate firewall. ACL in meter may be needed when it is exposed to the Internet directly.
General information about Port Forwarding and instructions how to set up it in simple home routers available
everywhere. E.g. here: http://www.howtogeek.com/66214/how-to-forward-ports-on-your-router/.
2.7.11 Modbus/TCP interface
Vortex TCP meter supports industry standard automation protocol Modbus/TCP .
Table 2: General specifications:
Protocol TCP
Port 502
Number of simultaneous
connections
20
Format of 16 bit registers standard MSB first (big endian)
Format of 32 Long and Float
values Most significant word coming first (big
endian)
Modbus Address 0
Supported Function Codes 3,4,16,5
2.7.11.1 Modbus utilities
We include for customer convenience two applications which may be used during integration into your automation
system:
• MbusGui.exe Windows GUI application for reading Modbus registers of the meter.
• mbus.exe Generic DOS console application for reading Modbus/TCP registers.
These two applications are stored on SD card inside meter. To download them click on menu link “ LOG DATA ” and
then select directory EXE. Right click on MBUS.EXE or MBGUI.EXE link to download it to your PC.