
B-63404EN/03 OPERATION 1.DeviceNet FUNCTIONS
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Diagnosis Information on the Bus Parameters Setting Screen
STATUS and COMMUNUNICATION STATUS are displayed in bus
parameter setting screen as diagnostics information used for verifying
the communications status.
Table 1.2.1 (b) describes this diagnostics information.
Setting the MAC-ID and baud rate
Set the node number "2. MAC-ID" of this master node and the baud
rate "3. BAUD RATE" to appropriate values referring to items 2 and
3 in Table 1.2.1 (a).
Assigning status information
Set to parameters the addresses and sizes of the R areas to which
status information data is to be assigned.
The content up to the STATUS SIZE setting value items (see Table
1.2.1 (c)) is assigned continuously starting from the specified R area
signal.
For example, to assign eight bytes of status information from R1500
onwards, set each of the data items as follows in screen 1-5.
4 STATUS ADDRESS = R1500
5 STATUS SIZE = 8
Status information is assigned to R area signals as follows according
to this setting.
Status Information Assignments
R1500 STATUS information
R1501 Slave communications status 1
R1502 Slave communications status 2
R1503 Slave communications status 3
R1504 Slave communications status 4
R1505 IDLE/ACTIVE information
R1506 CAN BUS STATUS 1 information
R1507 CAN BUS STATUS 2 information
On the PMC, start communications with the slaves using this status
information (STATUS information, slave communication status, etc.).
Also use this status information to process on the PMC any
communications errors that may occur.
The error status of this status information is returned to the normal
communications status when the cause of the error is removed. So, if
the error status must be held, perform this operation on the PMC.
CAUTION
When you set the assignment data, carefully set the
data so that areas to be secured as data do not
duplicate areas that are currently used for ladder
programs on the PMC.