Datalogic GWY-01-PBS-01 Specifikace stáhnout pdf (Strana 53)

GWY-01-DNT-01 MANUAL – REV. 02 CHAPTER 5:

DEVICENET INTERFACE

PAGE 53 OF 67

5.2.3 Configuring Data Rate and Node Address

As noted, each device, computer and controller on a DeviceNet network is

considered an individual node for which a unique Node Address number (between 0

and 63) is assigned. The node address provides a means of numerically identifying

each device on a DeviceNet network.

Prior to operating the GWY-01-DNT-01, you must verify that it has been configured

for the same Data Rate as your network and that it has been assigned a suitable

node address value. The Gateway supports data

rates of 125Kb (default), 250Kb and 500Kb and

supports node addresses 1 – 63 (default: 63).

To change the data rate or node address, use

either the "Node Commissioning" tool in

RSNetWorx for DeviceNet or Escort Memory

Systems’ “Cobalt Dashboard” utility running on a

host computer that is connected to the USB port

on the Gateway. The Cobalt Dashboard utility is

available online at www.ems-rfid.com

NOTE: When using node commissioning in RSNetWorx for DeviceNet, modify only one

parameter at a time (either data rate or node address). After changing the data rate,

you must manually cycle power to your DeviceNet network for the change to take effect

5.2.4 DeviceNet - Exchanging Data and Handshaking

After the Gateway has been properly configured for your DeviceNet network, it will be

possible to send the Gateway commands using Escort Memory Systems’ CBx RFID

Command Protocol. For reference, the CBx Protocol – Reference Manual is

available online at www.ems-rfid.com

However, to ensure that messages to and from the Gateway are properly delivered

and received, a handshaking mechanism has been implemented that uses a pair of

dedicated words in the exchange.

The first two words in the Input Controller Tag and Output Controller Tag are

dedicated to handshaking. When new information is generated, the data-producing

device increments the counter value stored in the second word of a controller tag

(either Input or Output, depending on the device). The data-consuming device,

copies that same value to the counter in the first word of the reciprocal (or opposite)

controller tag. This handshaking scheme signals to the data producer that the

information has been received.

FACTORY DEFAULT

CONFIGURATION

Data Rate = 125Kb

Node Address = 63

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 66 67

Žádné komentáře

Datalogic GWY-01-PBS-01 Specifikace Strana 53