YOKOGAWA DLM6054 (01) PDF Document

You can check the firmware version of your YOKOGAWA DLM6054 on the overview screen. For instructions on how to open the overview screen, refer to section 18.4 in the User’s Manual IM 701331-01E.

The communication interfaces on the YOKOGAWA DLM6054 have the following functions:

Reception Function:

You can specify the same settings as those specified by the front panel key operations. The device receives output requests for measured and computed data, setup parameters of the panel, and error codes.

Transmission Function:

The device outputs measured and computed data, panel setup parameters, the status byte, and error codes that have occurred.

Switching from Local to Remote Mode:

If the YOKOGAWA DLM6054 receives a “:COMMunicate:REMote ON” command from the PC while in local mode, it switches to remote mode. In this mode:

• REMOTE is displayed in the center of the upper section of the screen.

• All keys except the SHIFT + CLEAR key are disabled.

• Settings entered in local mode are retained.

Switching from Remote to Local Mode:

Pressing SHIFT + CLEAR in remote mode returns the instrument to local mode. This action is void if the device has received a “:COMMunicate:LOCKout ON” command from the PC (local lockout condition). When the YOKOGAWA DLM6054 receives a “:COMMunicate:REMote OFF” command from the PC, it switches to local mode regardless of the local lock condition. In local mode:

• The REMOTE indication on the screen disappears.

• Key operations are enabled.

• Settings entered in remote mode are retained.

Note: The USB interface cannot be used simultaneously with another interface (Ethernet or GP-IB).

When making connections with the YOKOGAWA DLM6054, please observe the following precautions:

• Connect the USB cable by inserting the connector firmly into the USB connector.

• When connecting multiple devices using USB hubs, connect the oscilloscope to the USB hub that is closest to the controller.

• Do not insert the USB cable into the GO/NO-GO output terminal, as this may cause the instrument to malfunction.

To remotely control the YOKOGAWA DLM6054 using communication commands through the USB port, follow these steps:

1. Press the UTILITY key.

2. Press the Remote Control soft key.

3. Press the USB soft key to display the USB menu.

4. Select USBTMC.

5. Restart the YOKOGAWA DLM6054 to enable the setting.

Note:

• You must restart the oscilloscope to activate the TMC or Mass Storage setting. Wait at least 10 seconds after turning the power switch OFF before turning it back ON.

• You must install YOKOGAWA’s TMC (Test and Measurement Class) driver on your PC.

• You cannot use keys to perform file operations when a PC is connected and the Mass Storage setting is enabled. To perform file operations, you must restart the oscilloscope after disconnecting the PC or enabling the TMC setting.

Switching from Local to Remote Mode:

The YOKOGAWA DLM6054 switches to remote mode when it is in local mode and it receives a “:COMMunicate:REMote ON” command from the PC.

• “REMOTE” appears at the top center of the screen.

• All keys except the SHIFT + CLEAR key are disabled.

• Settings entered in local mode are retained.

Switching from Remote to Local Mode:

When the oscilloscope is in remote mode, pressing SHIFT + CLEAR switches it to Local mode, unless it has received a “:COMMunicate:LOCKout ON” command from the PC. The device also switches to local mode when it receives a “:COMMunicate:REMote OFF” command from the PC, regardless of the local lockout state.

• The “REMOTE” indicator at the top center of the screen disappears.

• Key operations are enabled.

• Settings entered in remote mode are retained.

Note: The Ethernet/VXI-11 interface cannot be used simultaneously with another interface (USB or GP-IB).

Follow this procedure to connect the YOKOGAWA DLM6054 to an Ethernet network:

1. Connect a UTP (Unshielded Twisted-Pair) or STP (Shielded Twisted-Pair) cable that is connected to a hub or other network device to the 100BASE-TX port on the rear panel of the oscilloscope.

Notes about Connections:

• Be sure to connect the oscilloscope to a PC through a hub using straight cables. The device may not operate properly if you connect it to a PC directly using a cross cable.

• If you use UTP cables (straight cables), make sure that they are category 5.

Port LEDs:

• LINK LED: Illuminates when a link is established between the oscilloscope and another device.

• ACT LED: Blinks when packets are being sent and received normally.

To configure the network settings for remote control, follow these steps:

1. Press the UTILITY key.

2. Press the Remote Control soft key.

3. Press the Network or Network(VXI-11) soft key to display the menu.

From this menu, you can configure the following settings:

• User Name and Password: The Ethernet interface has a user authentication feature. Set the user name (up to 30 characters, default is “anonymous”) and password (up to 30 characters). User names and passwords are case-sensitive.

• Timeout Value: The oscilloscope disconnects from the controller if it is not accessed for the specified period.

• TCP/IP: You must specify the IP address, Subnet mask, and Default gateway. For details on how to specify these settings, see section 14.2, “Setting Up the TCP/IP” in the DL6000/DLM6000 User’s Manual (IM DLM6054-01EN).

When making connections using the GP-IB interface, please take the following precautions:

• For handling the GP-IB card, see the manual that comes with the card.

• Attach the GP-IB correctly with the front face up.

• Connect the GP-IB card to the oscilloscope’s PC card slot first, then turn the oscilloscope ON.

• No more than 15 devices, including the controller, can be connected on a single bus.

• Each device must have its own unique address.

• Use a cable of length 2 m or less for connecting devices.

• The total cable length must not exceed 20 m.

• When communicating, have at least two-thirds of the devices turned ON.

• Connect multiple devices in a star or linear configuration. Do not wire them in a loop or parallel configuration.

CAUTION: When connecting or disconnecting communication cables, make sure to turn OFF the PC and the YOKOGAWA DLM6054 to avoid erroneous operation or damage to internal circuitry.

To set up the GP-IB interface for remote control, follow these steps:

1. Press the UTILITY key.

2. Press the Remote Control soft key.

3. Press the GPIB soft key to display the GP-IB menu.

4. Select GP-IB as the interface.

5. Set the address of the YOKOGAWA DLM6054 within the range of 0 to 30 for the addressable mode.

Each device connected via GP-IB must have a unique address. When you connect the oscilloscope to a PC, ensure you assign a unique address to the oscilloscope. Do not change the address while the controller is communicating with the oscilloscope or other devices over the GP-IB.

The YOKOGAWA DLM6054 responds to different interface messages as follows:

Responses to a Uni-Line Message:

• IFC (Interface Clear): Clears the talker and listener functions. Stops output if data is being output.

• REN (Remote Enable): Switches between the remote and local modes.

Responses to a Multi-Line Message (Address Command):

• GTL (Go To Local): Switches to the local mode.

• SDC (Selected Device Clear): Clears the program message being received and the output queue. *OPC and *OPC? commands in execution are void. *WAI and COMMunicate:WAIT commands are immediately terminated.

Responses to a Multi-Line Message (Universal Command):

• LLO (Local Lockout): Disables the CLEAR key on the front panel to prohibit switching to local mode.

• DCL (Device Clear): Same operation as the SDC message.

• SPE (Serial Poll Enable): Sets the talker function on all devices on the bus to serial polling mode.

• SPD (Serial Poll Disable): Clears the serial polling mode of the talker function on all devices on the bus.

Communication with the YOKOGAWA DLM6054 uses program messages and response messages.

Program Messages:

These are sent from the controller to the instrument. The format is ` [Space] `.

• Program Header: Indicates the command type.

• Program Data: Required data for executing a command. Multiple sets are separated by commas (,).

• PMT (Program Message Terminator): Can be NL (New Line), ^EOM, or NL^EOM.

Multiple commands can be sent in a single message, separated by semicolons (;).

Response Messages:

These are sent from the instrument to the controller in response to a query command (a command ending with a ‘?’). The format is `[Response header] [Space] `.

• Response Header: Sometimes precedes the response data.

• Response Data: Contains the content of the response.

• RMT (Response Message Terminator): It is NL^EOM.

Multiple response units are separated by a semicolon (;).

When transferring messages to and from the YOKOGAWA DLM6054, keep the following points in mind:

• If a program message that does not contain a query is sent, the next program message can be sent at any time.

• If a program message that contains a query is sent, a response message must be received before the next program message can be sent. Sending another message before receiving the full response will cause an error.

• If the controller tries to receive a response message when there is none, an error occurs.

Deadlock:

The instrument has a buffer for program and response messages (1024 bytes or more). When both the transmit and receive buffers become full at the same time, the instrument can no longer operate. This is called a deadlock. To avoid this:

• Keep the program message (including the terminator) below 1024 bytes.

• Deadlock will not occur if a program message does not contain a query.

Overlap commands may start execution of the next command before the previous one is complete. For example, querying a V/div value immediately after a file load command may return the value before the file was loaded. To prevent this and ensure synchronization, use one of the following methods:

Using the *WAI Command:

The *WAI command holds subsequent commands until the current overlap command is completed. Placing `*WAI;` between the overlap command and the next command will force the program to wait.

Using the COMMunicate:OVERlap command:

This command enables or disables overlap operation for specific command types. You can use it to disable overlap for media access commands, making them operate sequentially.

Using the *OPC Command:

The *OPC command sets bit 0 (the OPC bit) of the standard event register to 1 when the overlap operation is completed. You can then poll for a service request generated by this bit to know when it is safe to proceed.

Using the *OPC? Query:

The *OPC? query generates a response (‘1’) only after an overlap operation has been completed. The program will pause until it reads this response, thus ensuring synchronization.

The following tables describe common error messages related to communication with the YOKOGAWA DLM6054.

Error in Communication Command (100-199)

Error in Communication Execution (200 to 299)

Error in Communication Query (400 to 499)

Other Errors (350)