CHAPTER 2 MULTILOAD COMMAND RESPONSES
<command_status> <rcu_status> <card_status> <command specific response data>
For MultiLoad to acknowledge a message two conditions must be met. First the message must fit the Message
Framing Protocol with a valid LRC, BCC or CRC. Second, the address specified in the first two characters of
the command must match the configured MultiLoad address. Any message that satisfies both of these
requirements will be sent a response.
Modbus:
If using the Modbus protocol, the Modbus Extended Services Registers must be used to pass in
these ASCII string commands.
The first three characters of every response will contain command, RCU and card status data as defined below.
enum
{
VALID_COMMAND = ‘0’,
INVALID_PARAMETER = ‘1’,
INVALID_COMMAND = ‘2’
} command_status;
enum
{
IDLE = '0',
AUTH_BAY = 4',
MENU_MODE = '9',
DIAG_MODE = '%',
AUTHORIZING_LOAD = 'A',
LOAD_AUTHORIZED = 'B',
COMPLETING_LOAD = 'C',
TRANSACTION_DONE = 'D',
TRANSACTION_CANCEL = 'E',
PULLING_TRANSACTION = 'P',
ARCHIVING_TRANSACTION = 'R',
TRANSACTION_AUTHORIZED = 'T',
RCU_NOT_CONFIGURED = '?',
RCU_POWER_UP = '!',
INITIALIZING = 'I',
NO_TRANSACTION = 'N',
REMOTE_AUTH_PRESET1 = 'a',
REMOTE_AUTH_PRESET2 = 'b',
REMOTE_AUTH_PRESET3 = 'c',
REMOTE_AUTH_PRESET4 = 'd',
REMOTE_AUTH_PRESET5 = 'e',
REMOTE_AUTH_PRESET6 = 'f',
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