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Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 69
can be directly driven by the SCP. See Figure 29 for a connection
diagram that also shows the required user-supplied output protection
components.
• <ch_list> specifies the channels that will control stepper motors. The
channels referenced can be on more than one E1538. The channels must
be in ascending order. Based on the <mode> parameter, the channels
will be arranged into adjacent groups of 2 ("...C2"), or 4 ("...C4")
channels. These groups can not be split across SCPs.
The algorithm can send new position values to the first channel in a
motor-group. The algorithm will read the current position value from
the second channel in the motor-group. Related error messages:
3115, "Channels specified are not in ascending order."
3116, "Multiple channels specified are not grouped correctly."
3117, "Grouped channels are not adjacent."
• Send with VXIplug&play Function: hpe14XX_cmd(...)
Usage See “Stepper Motor Control” on page 37.
preset count to 0, full step, half speed, 4 channel, min speed 64s/s,
max speed 256s/s (in half speed mode, actual speed=half specified speed)
SOUR:FUNC:STEP 0,MFSFC4,128,512,(@144:147)
SOURce:PULM[:STATe]
1SOURce:PULM[:STATe] <
enable
>,(@<
ch_list
>) enable the pulse width
modulated mode for the PULSe channels in <ch_list>.
Parameters
Comments • This command is coupled with the SOURce:FM command. If the FM
state is enabled then the PULM state is disabled. If the PULM state is
enabled then the FM state is disabled. If both the FM and the PULM
states are disabled then the PULSe channel is in the single pulse mode.
• If the channels specified are not on a Frequency/Totalize SCP, an error
will be generated.
• *RST Condition: SOUR:PULM:STATE OFF
• Send with VXIplug&play Function: hpe14XX_cmd(...)
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
enable boolean (uint16) 1 | 0 | ON | OFF none
ch_list string 100 - 163 none