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1.2
USB Interface Functions and Specifications
Reception Function
Transmission Function
Switching between Remote and Local Modes
USB Interface Specifications
1-2
You can control the WT500 from a PC using the USB interface. YOKOGAWA's dedicated
USB connection device driver and library software (TMCTL) must be installed on the PC.
You can specify the same settings as those specified by front panel key operations.
Receives output requests for measured and computed data, setup data, and error codes.
Outputs measured and computed data.
Outputs panel setup parameters and the status byte.
Outputs error codes that have occurred.
When Switching from Local to Remote Mode
Remote mode is activated when the :COMMunicate:REMote ON command is received
from a controller while local mode is active.
• The REMOTE indicator is turned ON.
• All keys except the LOCAL key are disabled.
• Settings entered in local mode are retained even when the WT500 switches to remote
mode.
When Switching from Remote to Local Mode
Pressing the LOCAL key when the WT500 is in the remote mode causes the instrument
to switch to the local mode. However, this is not possible when the :COMMunicate:
LOCKout ON command is received from the PC while Local Lockout mode is active.
Local mode is activated when the :COMMunicate:REMote OFF command is received
regardless of Local Lockout.
• The REMOTE indicator is turned OFF.
• Key operations are enabled.
• Settings entered in remote mode are retained even when the WT500 switches to local
mode.
Note
The USB interface cannot be used simultaneously with other communication interfaces (GP-IB
and Ethernet).
Electrical and mechanical specifications: Conforms to USB Rev.1.1
Connector:
Number of ports:
Power supply:
Protocol:
PC system supported:
Type B connector (receptacle)
1
Self-powered
USB-TMC
A controller such as a PC running Windows 98 SE, Windows
Me, Windows 2000, or Windows XP that is equipped with a USB
port as standard (a separate device driver is required for the
connection with a PC)
IM 760201-17E
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