Bimba STP-10 - Manual (Page 13)

STP-10 Hardware Manual STP-10 Hardware Manual
13
4. To set the IP address of the second NIC:
a. On Windows XP, right click on “My Network Places” and select properties.
b. On Windows 7, click Computer. Scroll down the left pane until you see “Network”. Right click and select properties.
Select “Change adapter settings”
5. You should see an icon for your newly instated NIC. Right click again and select properties.
a. Scroll down until you see “Internet Properties (TCP/IP)”. Select this item and click the Properties button.
b. On Windows 7 and Vista, look for “(TCP/IPv4)”
6. Select the option “Use the following IP address”. Then enter the address “10.10.10.11”. This will give your PC an IP address
that is on the same subnet as the drive. Windows will know to direct any traffic intended for the drive’s IP address to this
interface card.
7. Next, enter the subnet mask as “255.255.255.0”. Be sure to leave “Default gateway” blank. This will prevent your PC from
looking for a router on this subnet.
8. Because you are connected directly to the drive, anytime the drive is not powered on your PC will annoy you with a small
message bubble in the corner of your screen saying “The network cable is unplugged.”
Connecting to a Host using RS-485 Option Card
RS-485 allows you to connect more than one drive to a single host PC, PLC, HMI or other computer. It also
allows the communication cable to be long (more than 1000 feet). But the device to which you connect must
have an RS-485 port.
Pin diagram is shown to the right. Wiring diagrams can be found on the next page. We recommend the use of
Category 5 cable. It is widely used for computer networks, it is inexpensive, easy to get and certified for quality and data integrity.
The STP-10 drives can be used with either two wire or four wire RS-485 implementations. The connection can be point to point
(i.e. one drive and one host) or a multi-drop network (one host and up to 32 drives).
Four Wire Systems utilize separate transmit and receive wires. One pair of wires must connect the host computer’s transmit
signals to each drive’s RX+ and RX- terminals. Another pair connects the TX+ and TX- drive terminals to the host computer’s
receive signals. A logic ground terminal is provided on each drive and can be used to keep all drives at the same ground potential.
This terminal connects internally to the DC power supply return (V-), so if all the drives on the RS-485 network are powered from
the same supply it is not necessary to connect the logic grounds. You should still connect one drive’s GND terminal to the host
computer ground.
Four wire systems are better than two wire types because the host can send and receive data at the same time, increasing system
throughput. Furthermore, the host never needs to disable its transmitter, which simplifies your software.
RX+ RX
–
TX
–
TX+
GND
RS-485/422
RS-485 Four Wire System
+RX- +TX- GND +RX- +TX- GND +RX- +TX- GND
to PC TX+
to PC TX-
to PC RX+
to PC RX-
to PC GND
Drive #1 Drive #2 Drive #3