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GWY-01-DNT-01 MANUAL – REV. 02 CHAPTER 4:

COMMAND MAPPING

PAGE 45 OF 67

4.8.2 Notification Mask Example

In the following example, an RFID controller is attached to the Gateway’s Subnet

network. After power is applied to the controller, the Gateway immediately attempts

to determine its Node ID (Node 04 in this example). After recognizing a stored Node

ID configuration, the Gateway allows the device onto the Subnet network.

Now if bit 01 in the Notification Mask was enabled (set to one = ON), Notification

Event 01 would be triggered and the Gateway would immediately write Notification

Message 01 to Node Output Page 36 (the Node Output Page number for Node ID

04). The Notification Message would indicate that a new controller was recognized at

Node 04 and is functioning properly (i.e. the controller is healthy).

If, on the other hand, the recently connected controller does not power-up, or fails to

initialize properly, and bit 02 in the Notification Mask is enabled, Notification Event

02 will be triggered, in which case the Gateway will write Notification Message 02 to

Node Output Page 36. This message informs the host that the controller at Node 04

is experiencing a problem.

4.8.3 Notification Message Packet Structure

DESCRIPTION MSB LSB

Overall Length of Notification

Message (in words)

0x00 0x06

0xFE in MSB = Notification Message

Flag

Notification Event in LSB

0xFE <Notification Event>

Instance Counter in MSB (a

Notification Message is considered a

response; therefore the Instance

Counter will be incremented by one)

Node ID in LSB (04 for the above

example)

<IC> 0x04

Month and Day Timestamp

Hour and Minute Timestamp

Seconds Timestamp in MSB

0x00 in LSB

<Second> 0x00

Table 4-7: Notification Message - Packet Structure

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 66 67

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Datalogic GWY-01-PBS-01 Especificaciones Pagina 45