Digital Outputs Wiring
TB600
External Equipment
1
2
3
4
5
6
7
8
9
Control Out1
Control Out2
R12
10 Ohms
ISO 24V
ISO Ground
ISO Ground
TB600
External Equipment
1
2
3
4
5
6
7
8
9
V DC
(15 . . . 30V DC)
R-Pullup
R-Pullup
Control Out1
Control Out2
Figure 22: Typical control out 1 & 2 interface with internal pullups active
Figure 23: Typical control out 1 & 2 interface with external pullups passive
RS485 Output
The RS485 feature allows up to 126 transmitters to be placed on a single three-wire cable up to 4000 feet All transmitters are
assigned a unique numeric address that allows all of the transmitters on the cable network to be independently accessed
Either Modbus RTU or BACnet MS/TP protocol is used to interrogate the transmitters
Flow rate and total can be monitored over the digital communications bus
When a USB programming cable is connected, the RS485 and frequency outputs are disabled
TB600
External Equipment
5
6
RS485 +
RS485 −
A
B
60.4 Ohms
60.4 Ohms
Terminator Resistors
(Enabled through Parameter Setting)
Figure 24: Typical RS485 interface
Digital I/O Wiring
TB500
1
2
3
4
5
Reset Total +
Reset Total -
Push-button
5…30V DC
TB500
1
2
3
4
5
AquaCUE/BEACON
Endpoint
DGND (Black Wire)
Endpoint VccClk In (Red Wire)
Endpoint Data Pulse Out (Green Wire)
NOTE
: Non-isolated
Figure 25: Digital I/O—reset totalizer
Figure 26: Digital I/O—BMI encoder interface
Wiring the Transmitter
Page 15
May 2021
TTM-UM-02537-EN-06