WD30-ME Omron, WD30-ME Datasheet - Page 56

• Manufacturer Part Number: WD30-ME
• Description: WIRELESS DEVICENET MASTER UNIT
• Manufacturer: Omron

Specifications of WD30-ME

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: WD30ME

44
3-1
3-1-1
Status Monitoring Program Example
Status Monitoring Program Example
Reading the DeviceNet master status of the lower network
An example of a status monitoring program for the DeviceNet wireless unit is
given below.
In this example, the status of the DeviceNet wireless unit is checked at the
PLC CPU unit. If an error flag has occurred, an Explicit message command to
read the DeviceNet master status in the lower network where the wireless
slave station is connected will be issued.
In order to assign a status to the IN area, bit 3 of SW1 on the wireless master
station should be turned ON beforehand.
The IN area allocation for the wireless master station at the CS1 is shown
below.
The status assigned to the IN area of the master is monitored. Since the bit for
WNODE = 3 is 1, Instance ID is set to "03" and an Explicit message
(DeviceNet master status read) command is issued to the wireless slave sta-
tion.
Wireless master station
NNODE = 02
Wd 3300
Wd 3301
Wd 3302
Wd 3303
Wireless slave station
NNODE = 03
15 14 13 12 11 10
16 15 14 13 12 11 10
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
Maser unit
CS1W-DRM21
Wireless network
9
Node address = 63, device address = 01
Upper DeviceNet network
Lower DeviceNet network
8
9
The DeviceNet node address is used for
both the node address and the NNODE.
8
7
6
7
5
6
4
5
4
3
2
3
Section 3-1
2
1
0
1
Bit
Status
Status
Status
Status