ADS Environmental Services FlowShark QR 775002 A4 - Manual (Page 211)

Modbus 9-7
Connecting the FlowShark to Modbus
Connect the ADS FlowShark to Modbus using the ADS Modbus
RS232 cable (ADS p/n 5000-0726). The standard cable comes in a
10-foot length. This length extends the signal outside the manhole
to merge with the home-run cable to the customer’s equipment. The
maximum length of the line can be 50 feet, based on 10 feet of ADS
added to 40 feet of user-supplied cable. If additional cable is
required, connect to the ADS cable inside a sealed junction box or
using other sealed, waterproof methods.
Note: The RS232 line driver in the monitor is not
intended to power any RS232 port devices (e.g., a line
powered RS485 device). If the Modbus signal requires
long haul, the user must provide a powered RS232-to-
RS485 converter and supply power to the converter. Other
methods for extending the RS232 line are available;
however all require some kind of power.
RS232 Port Settings
The Modbus Master port must be set to 19,200 baud, 8 data bits, 1
stop bit, and no parity.