Curtis 1355 handleiding
Handleiding
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4 — CANopen COMMUNICATIONS
Curtis 1355 CANopen Soft Starter Module Manual – September 2020
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4 — CANopen COMMUNICATIONS
The 1355 follows the industry trend (which Curtis proposed and supports) toward CANopen
communications. e 1355 runs the minimum state machine, which contains the standard mandatory
objects and follows the recommended SDO addressing scheme.
e 1355 processes two incoming PDOs (RX) and responds with two outgoing PDOs (TX). ese
PDOs use a dynamic mapping method. All programmable parameters and monitor parameters are
accessible by standard SDO transfer.
e time between incoming PDOs is monitored and if excessive, a fault will be reported. is allows
the 1355 to know whether the system is under manager control. e 1355 also produces a cyclic
Heartbeat message, which is the CiA-preferred method for manager error control.
Emergency messages are sent sporadically whenever an error status ag within the 1355 changes
state. A minimum time between emergency messages prevents the bus from being ooded.
BAUD RATES
e 1355 runs at one of three selectable baud rates: 125 kbps, 250 kbps, or 500 kbps. e baud rate
can be changed by a Curtis programmer or by an SDO. Changes in the baud rate require an NMT
reset or key cycle.
NODE ADDRESSES
e node address is used to route messages to the 1355 and to denote messages from the 1355.
e node address is part of the COB ID and therefore also plays a part in message priority and bus
arbitration.
e 1355 can be assigned node address 1 through 127; node address 0 is reserved and unavailable.
Changes to the node address require an NMT reset or key cycle.
HEARTBEAT
e heartbeat message is a very low priority message, periodically sent by each ancillary device on
the bus. e heartbeat message has a single byte of data and requires no response. Once the 1355
completes its initialization, the rst heartbeat will be issued and will continue until communication
is stopped.
e heartbeat message has only one data byte. e top bit is reserved and should be set to zero. e
bottom 7 bits hold the current NMT device state.
EMERGENCY MESSAGES
Emergency messages are high priority messages that announce the setting or clearing of a fault in a
ancillary device. ese messages are originated by the ancillary, which sends 8 bytes of data.
Internal to the device, each fault is mapped to one of the device’s supported “Error Categories”
from an extensive list of possible Error Categories dened by CANopen. e fault reporting scheme
ensures that one Emergency message is sent in a CAN bus processing cycle during which one or
more faults within a given Error Category have been set or cleared. If a single fault has occurred since
the last processing cycle, then only one Emergency message is sent until such time as either a new
fault is detected or the previously reported fault has cleared. If multiple faults are detected in a given
cycle, the rst fault is sent immediately, and the remaining faults are queued. Queued faults are sent
Bekijk gratis de handleiding van Curtis 1355, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Curtis |
| Model | 1355 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 5646 MB |
