Section 1
SUPERVISOR PROTOCOL
1
SECTION 1.1 SUPERVISOR II PROTOCOL VER 3.0
This document describes features that are more technical in nature than the normal opera-
tion of the machine, in particular sequencing and communication.
The Supervisor II communications link is a RS-485 (two wire) serial line. The following three
parameters must be set correctly to be able to communicate through this link.
COM ID# Unique number for each machine on the link.
BAUDRATE Must be the same for all machines (default is 9600).
SEQUENCE Sequencing mode (see below).
The function of the link is specified by the setting of the Sequence parameter as follows :
DISABLED Responds to status and parameter change messages but will not
respond to messages to start, stop, load or unload.
REMOTE Responds to status and parameter change message but will not
respond to messages to start, stop, load or unload. The remote inputs
and outputs are enabled (start/stop, load/unload, master/local).
SLAVE Will respond to all messages, but will not start or load unless com-
manded to do so by a message. This mode is used to control the
machine from a master computer.
HOURS Sends net status message about once a second, starts, loads and
unloads machines based on sequencing hours.
COM ID# Sends net status message about once a second, starts, loads and
unloads machines based on machine Com ID#.
If the sequence parameter is set to Hours or Com ID# then the following parameters must
be set (see section on Sequencing Methods) :
LAST COM Highest Com ID#
LOWEST Lowest line pressure before starting machine.
RECOVER Recovery time.
ROTATE Machine rotation time.
CAPACITY Capacity of the machine.
SEQ HRS Sequencing hours.
See Sequencing (Section 2) for detailed descriptions of sequencing parameters and operation.
Messages can be sent between Supervisor II controls and to/from a computer. There are two
modes of operation, query and broadcast.
If the sequence parameter is set to DISABLED, REMOTE, or SLAVE then the query mode
is enabled. The Supervisors will only send messages in response to a message from the
host computer. In DISABLED and REMOTE the Supervisor controls the machine locally (ie.
start, stop load, and unload) and will ignore any messages to start, stop, load or unload.
Only status and parameter change messages will be acted on. In SLAVE mode the