YASKAWA motoman NX100, Инструкция по эксплуатации

Страница: 28 / 88

Fieldbus PCI-Card
Ping
4 General installation in IP-based networks
This chapter is valid for the PCI cards that use IP based communication over Ethernet.
Every node on an IP network must have a unique IP address.
4.1 Ping
The IP address on the board is set with the HMS “Anybus IPconfig” tool which can be downloaded
from the HMS support web page. Verify with the ping command-line tool. If a ping is successful, the
cabling and IP address/subnet mask are operational. Equipment connected together must have the
same subnet mask. If not they will be on different logical networks.
4.1.1 No answer from ping
If no answer, verify the robot controller IP address and subnet mask (Maintenance Mode, Setup-
>Option Function). Verify IP address on your PC, write “ipconfig” on the command line. Subnet
masks must be equal and IP addresses must be unique. Cleaning the arp cache may sometimes
help if cables are connected/disconnected frequently. On the command line write “arp –d”.
4.1.2 Only one Ethernet cable used
This is a special case when robot controller and pinging PC is connected with just one cable. Most
modern PCs does automatic cross over of the Ethernet cable.
Solution:
Connect a switch/hub between the robot controller and the PC. If the communication works after that,
the cable needs to be of the crossover type.
4.1.3 Logical Networks
One reason that the ping does not work could be erroneously configured subnet masks. An IP
address consists of two parts:
1. Subnet. The first part describing the subnet/logical network where the node belongs. Nodes that
communicate with each other need to be on the same subnet. If not a gateway/router is needed
to connect the different networks.
2. Node address.
The other part describes the node address within the subnet
The IP address is not only a node address, the subnet part is of the same importance. The subnet
mask is the key to the subnet part of the IP address. It tells how many of the most significant bits in
the IP address that is the network address
Example 1:
The IP address 172.17.20.106 with subnet mask 255.255.0.0. The subnet part of the address is
172.17, the node address is 20.106. A node with this IP address can only communicate with nodes
which have their IP address starting with 172.17.
Example 2:
Page 22 Reg.No. ME00107EN-02