2-7
Section
Connecting Communications
28
•
Pins 7 and 8 are used to set the baud rate. Be sure to set the baud rate to match
that of the DeviceNet Master Unit. The factory setting is 125 kbps (pins 7 and 8
OFF).
Baud rate
Pin 7
Pin 8
125 kbps
OFF
OFF
250 kbps
ON
OFF
500 kbps
OFF
ON
Not used
ON
ON
•
Pin 10 is used to set the E5ZE operation when a DeviceNet communications
error occurs.
ON:
The E5ZE continues to operate according to the data that was
transmitted immediately before the error occurred.
OFF:
The E5ZE stops operating.
The factory setting is ON.
•
A DeviceNet transmission error is a connection time-out error or a transmis-
sion data error that has occurred during communications between the Devi-
ceNet Master and the E5ZE.
Cable Connections
•
The following diagram shows how the DeviceNet connector is wired.
•
Multi-drop connections cannot be used.
Black (V–)
Blue (CAN L)
Shield
White (CAN H)
Red (V+)
The number of E5ZE-8
D1
B DeviceNet Models with casing that can be
connected to one DeviceNet Master Unit depends on the capability of the Master
being used. The maximum number of Units that can be connected to one Master
is calculated according to the number of words allocated to the
E5ZE-8
D1
B and the number of words that can be used by the Master.
•
The number of words allocated to the E5ZE-8
D1
B is as follows:
Inputs:
14 words
Outputs: 9 words
Message communications (FINS messages) are used.
Example: C200HW-DRM21-V1 DeviceNet Master Unit without Configurator
•
The number of words used by the Master is 50 input words and 50 output
words (current as of July 31, 1998). The E5ZE-8
D1
B is allocated
14 words, so the maximum number of Units that can be connected is as fol-
lows:
50
14 = 3 Units.
Number of Connectable
Units
