Basler Electric BE1-BPR - Manual (Page 130)

6-2 BE1-BPR Communications 9272000990 Rev J
COMMAND FORMAT
Each command consists of an ASCII string terminated by a carriage return, <CR>. A line feed <LF> is
optional. A semicolon may be used to separate multiple commands on a single line, however, the total
line length cannot exceed the size of the communication buffer (40 characters).
Command Format: [<ID>]<CMD1>[<;>CMD2<;>…<;>CMDn]<CR>[<LF>]
where
[ ] = Brackets identify optional parameters - brackets themselves are not part of command.
< > = Separator used for clarity - not an actual part of the command.
ID = Relay identifier used for RS-485 multi-drop (polled) communications.
CMDn = <Name>[#][<=><Setting-1>…[<,><Setting-n>]]
Name = Command name (1 to 8 characters)
# = Numeric or phase identifier to limit command to a specific item.
= = Used to indicate that the command is to change data/settings not to recall data.
Setting-n = Command setting(s).
, = Comma used as setting separator.
; = Semicolon used to separate multiple commands on the same line.
CR = Carriage return used to end command and start execution.
LF = Line feed may be used for clarity. Ignored by relay.
Spaces = One or more spaces may be added between entries for clarity if desired.
Commands received by the BE1-BPR relay consist of two general types: requests for information and
changes to operating parameters. Requests for information will always be accepted and executed,
however changes to operating parameters may be limited to access from personnel with the proper
password. Commands to change parameters are identified by an equals sign, '=', being included in the
command. The new operating parameters to the right of the equals sign are intended to replace the
current operating parameters related to the command.
Some commands may pertain to multiple items. In that case, a numeric or phase identifier is used after
the command name to specify a single item. If the identifier is left off, the command applies to all possible
items. For example, the IA command could be used to read the current on phase A or the I command
without the phase identifier would read the current on all inputs.
Multi-Drop (Polled) Command Operation
Each relay can have a unique identification number programmed from 1-254. If the Relay internal ID is set
to 0 (zero), then polled operation is disabled and the ID prefix is not required as part of the command. If a
non-zero ID is programmed for the relay, the relay ID number must preface each command sent to the
relay through either of the rear communications ports. The command ID is never required from the front
panel communications port.
In polled mode, the relay waits until it is polled (i.e. - receives a command identified for it), then it
responds. Any data string that does not start with the proper ID will be ignored.
A unique ID is reserved to communicate with ALL relays operating in multi-drop mode and connected to
the same network. Any command prefaced by an ID of '!' will cause all Relays receiving the command to
execute the command but not to respond (BROADCAST OPERATION - NO RESPONSE). This type of
operation allows commands to be executed simultaneously by multiple relays. For example, 17TIME
would read the current time setting of Relay 17 and !TIME=12:05:37 would simultaneously set all relays
on network to the new time entered.
NOTE
For polled operation over the RS-485 interface, the hardware handshake
(RTS/CTS), software handshake (XON/XOFF), and echo options must be
disabled on COM1 (i.e. COM1=,H0,E0,X0).