Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 20)

3-2 AutoMax Network Communication Option Board
FlexPak 3000 drives: When FULL is selected, the drive will occupy four
sequential network drops.
WebPak 3000 drives: When FULL is selected, the drive will occupy three
sequential network drops using indirect registers in Drop_2 and Drop_3 (see
section 7.1 for information about using indirect registers).
Step 5. Apply power to the AutoMax rack.
Serial communication is now established and information can be exchanged with the
network master. The drive transfers output data whenever this connection is made. To
transfer input data, you must complete the steps in the next section.
3.2 Selecting a Network Reference Source
AMX NETW REF SELECT (P.911) specifies the source of the speed/torque reference
when CONTROL SOURCE SELECT (P.000) is set to NETWORK . You can select either:
•
DIRECT : The reference is from register 33 in the drive’s Drop_1 register map. See
table 5.4 (FlexPak 3000 original map), table 6.4 (FlexPak 3000 alternate map), or
table 7.5 (WebPak 3000 map).
•
BROADCAST n: The reference is from one of the eight network broadcast data
registers (network drop area 0, registers 32 to 39). The specific broadcast register
(1 to 8) is assigned using a register in the drive’s Drop_1 register map. See
register 30 in table 5.3 (FlexPak 3000 original map), register 63 in table 6.6 (FlexPak
3000 alternate map), or register 30 in table 7.4 (WebPak 3000 map). See the
Network Communications Module instruction manual (J2-3001) for information on
broadcast data registers.
3.3 How the Drive Responds to a Loss of Network
Communication
The Network Option board attempts to remain active on the network at all times,
regardless of the control source setting.
At power up, the drive delays for approximately 10 seconds before indicating a loss of
network communication.
If communication is interrupted:
• The Network Option board immediately notifies the drive Regulator.
• The Network Option board tries to re-establish communication with the network
master.
• For FlexPak 3000 drives, if CONTROL SOURCE SELECT (P.000) is set to NETWORK , the
drive reacts to a network communication loss as specified by NETW COMM LOSS
SELECT (P.901).
• For WebPak 3000 drives, a fault is generated when network communication is lost if
CONTROL SOURCE SELECT (P.000) is set to NETWORK .
• If the drive includes an OIM , the NETWORK indicator above the CONTROL SOURCE
SELECT key blinks to indicate that network communication is inactive.