Eaton PDI WaveStar, Руководство по установке и эксплуатации

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8 Eaton PDI WaveStar Color Monitor Setup and Operation Manual P-164001109—Rev 01
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The Color Monitor has four (4) paralleled Modbus ports:
• J1 and J3 are header/plug connections for connecting to most devices.
– J1 is the upstream port.
– J3 is the downstream port.
• J2 and J4 accept standard RJ12 phone cable plugs for connection to an M4G PDU board.
– J2 is the upstream port.
– J4 is the downstream port.
The Modbus RTU interface is isolated, and pin designations are given in Table 1 :
Table 1. Pin-Out for Modbus Headers
Pin J1, J3 J2 (for RJ12 plugs) J4 (for RJ12 plugs)
1 Ground Not used Not used
2 RX- RX- TX-
3 RX+ TX- RX-
4 TX- RX+ TX+
5 TX+ TX+ RX+
6 NA Ground Ground
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Eaton devices have two (2) jumpers near their Modbus ports for configuring 2-wire vs. 4-wire Modbus RTU
(see
Figure 4 ). The Monitor’s 2-wire configuration jumpers are W1 and W2 (upstream) and W3 and W4
(downstream). Upstream and downstream chains can be differently configured.
For 2-wire configuration:
• At least one device in a device chain must have both jumpers jumped on its Modbus connection. If any
device in the chain has jumpers installed for 2-wire, all of the device chain is 2-wire. To avoid confusion
when troubleshooting, all of the devices in the chain should be jumped in the same way.
• TX+ or RX+ on the Monitor (either one, because the on-board 2-wire jumpers short them together) wires
to TX+ or RX+ on downstream devices.
• TX- or RX- on the Monitor wires to TX- or RX- on downstream devices.
• The + and - signal wires should comprise of a (twisted) wire pair residing in the same shield.
For 4-wire configuration:
• All of these jumpers must be removed from every device in the chain.
• TX+ on the Monitor’s PCB or on the customer Building Management System (BMS) wires to RX+ on a
device PCB (see
Figure 5 ).
• TX- from the Monitor or BMS wires to RX- on device PCB (see Figure 5 ).
• A second pair of wires connects the other pair of TX+ / RX+ and TX- / RX-.
• The TX+ and TX- going to the RX+ and RX- should be in the same shield. Do not run the +'s in one shield
and the -'s in another. Doing so may lead to sporadic communication.
Color Monitor Networking