WIKA CPC6000 User Manual
Page 48
Automated Pressure Calibrator
CPC 6000
48
Mensor/WIKA Operating Instructions - CPC 6000
7.3.1 Capability Codes
SH1
Full source handshake capability
AH1
Full acceptor handshake capability
T6
Talker with serial poll and unaddress if MLA
L4
Listener with unaddress if MTA
SR1
Full service request capability
RL1
Full remote/local capability including LLO
PP0
No parallel poll capability
DC1
Full device clear capability
DT1
Full device trigger capability
C0
No controller capability
E2
Tri-state outputs
7.3.2 Interface Functions
The CPC 6000 responds to the following IEEE-488 interface functions:
SRQ
Service Request: A service request is asserted whenever an error is encountered. When
the bus controller issues a serial poll the error will be cleared. If the host IEEE board in-
cludes automatic serial polling capability, turn this feature off in order to view all errors (see
ERROR? command).
LLO
Local Lockout: The front panel keyboard of the CPC 6000 may be locked by sending LLO
or the command LOCK ON.
GET
Group Execute Trigger: When this message is received, the CPC 6000 will save the current
readings until the next time it is addressed as a talker.
GTL
Go To Local: A GTL message will cause the CPC 6000 return to local operation and unlock
the keyboard.
DCL
Device Clear: When this message is received, the CPC 6000 will clear all errors and buffers
and remain in the REMOTE mode.
SDC
Selected Device Clear: The effect is the same as DCL.
EOI
End or Identify: May be used as a command or query terminator in the place of, or concur-
rent with, a terminating linefeed.
7.4 RS-232 Serial Communication
The serial communication port allows the CPC 6000 to communicate in RS-232 format with comput-
ers, terminals, PDAs, or similar hosts.
7.4.1 Cable Requirements
RS-232 communications are transmitted over a three conductor, shielded cable terminated in a stan-
dard DB9S connector on the instrument end, and usually the same connector on the host end. Figure
7.4.1 illustrates the proper pin-outs. Notice that each pin 2 is connected to pin 3 on the opposite end.
This configuration is commonly referred to as a 9-pin null modem cable.