Omega A2400 User Manual
Page 31
Command Set 4-10
Open Channel (OC)
(Extended)
The Open Channel (CC) command is used to open the communications
data channel in Extended Address mode. The open channel will allow serial
communications data to flow from the A2400’s RS-232 port to a string of RS-
485 devices. The open communications channel will remain open until a
Close Channel (CC) command or Remote Reset (RR) command is received
by the device.
Command:
{01OC
Response:
*
Command:
}01OC
Response:
*01OCED
Any time there is an open channel on the communications line and the host
transmits either a valid long form or short form prompt the open channel will
close.
Read Data (RD)
The Read Data (RD) command is used to read analog data from analog input
products. The RD command is included in the A2400 to maintain capability
with other D series products. Since the A2400 does not acquire analog data,
this command will always result in a fixed response:
Command:
$1RD
Response:
*+99999.99
Command:
#1RD
Response:
*1RD+99999.99D9
Read Extended Address (REA)
The Read Extended Address is used to read back two character address
stored by the Extended Address (EA) command. The response message is
four characters representing the hex ASCII codes for the two-character
address :
Command:
$1REA
Response:
*3031
Command:
#1REA
Response:
*1REA3031FA