PowerTec DFS-1 manual DLESTXUIDCMDDIGVL4, Bit Psn Sml, Bit Psn Smh

Definitions:

[DIG] - Digital output number 01 to 04 [VL4] - Always 00

[VL3] - Always 00

[VL2] - Always 00

[VL1] - Status of output 00 = off 01 = on [ERR] - Reported error

[80]- Unit not in remote mode

[84]- Illegal channel number

[86]- Illegal Command number

Write Digital Output (8C)

Command: Write Digital Output

Description:

This command tells the unit to turn on or off a specific digital output contact.

CMD = [8C] UID = [01] - [FF]

DIG = [01] - [04] depending on which Digital output

Message:

[DLE][STX][UID][CMD][DIG][VL4]

[VL3][VL2][VL1][DLE][ETX][CSM]

Response:

If no errors

[DLE][STX][UID][ACK][DLE][ETX][CSM] else

[DLE][STX][UID][NAK][ERR][DLE][ETX][CSM]

Definitions:

[DIG] - Digital Output channel choice [00] thru [04]

[VL4] - Always 00

[VL3] - Always 00

[VL2] - Always 00

[VL1] - [00] or [01] contact being open or closed.

[ERR] - Reported Error

[80]- Unit not in remote mode

[84]- Illegal channel number

[85]- Illegal channel value

[86]- Illegal Command number

	Set Operational Mode (8D)
Command:	Set Operational Mode

Description:

This command tells the unit to turn on or off

specific input control functions such as run, stop, etc. Refer to parameter 3 which defines which input controls are allowed by communications link and which MUST BE controlled by inputs on the terminal strip. An error message will be produced if set mode attempts to change the condition of an input that is not allowed to be remotely changed.

CMD = [8D]

UID = [01] - [FF]

SMH = [00] - [FF]

SML = [00] - [FE] depending on which CONTROL INPUT SEE PARAMETER # 3 FOR DEFINITION. This is a bit map that defines the desired stateof each

control input as follows:

7 6 5 4 3 2 1 0—Bit Position

0 0 0 0 0 0 0 0—Bit value can be 0 (off) or 1 (on) 7 6 5 4 3 2 1 0—Digital input number

BIT PSN		SML
where:	0	is Estop
	1	is Run
	2	is Preset
	3	is Up input
	4	is Down input
	5	is Reverse mode
	6	is Frequency mode
	7	is Local/Remote (0 for local)
BIT PSN		SMH
where:	0	is unused
	1	is Jog
	2	is Preset 2
	3	is Contactor Aux

Note that input 1 is Estop which must always be 0 since this cannot be set remotely. This can ONLY be a hardwired function. This means the largest value for [00][00][SMH][SML] is [00][00][FF][FE].

Example: To turn on inputs 1 and 5 the value for [00][00][SMH][SML] is 0000 0022, or [22]. Inputs

1 and 5 are defaulted to RUN and Reverse but can be redefined in parameters 31 through 37.

Page 52	DFS-1 Manual	Revised 7/95
		POWERTEC Ind. Corp.©