Siemens 353 - PB1 SW - PB1 Switch

UM353-1B Function Blocks
April 2012
3-65
PB1 SWITCH
PB1SW
ESN =
000
PB1 Switch
P
B/
S
witch Output
I
E
S
N
E
xec.
S
eq.
N
o.
(H)
..................... 001 to 250
NC
NC
Input
TM
MD HI ST
atus message
(S)
.. 5 ASCII Char (GREEN)
S
DH
OST
M
DL
I
ACMD H
OACMD
L
NPUTI NC
INPUT NO
(H)
...........
loop tag.block tag.output (null)
MD LO ST
atus message
(S)
. 5 ASCII Char (RED)
MD HI AC
tion message
(S)
... 5 ASCII Char (RED)
MD LO AC
tion message
(S)
. 5 ASCII Char (GREEN)
NO
MD
M
essage
D
isplay
NO
Input
STU
ALP
ONAITC
P
ower
U
p
LAST
(S)
...................... NO/YES (YES)
Switch
ACTION
(S)
................... MOM/SUS (MOM)
NP
U
TI
NO
NP
U
TI
MD
INPUT NC
(H)
...........
loop tag.block tag.output (null)
INPUT MD
(H)
...........
loop tag.block tag.output (null)
PS
3.2.63 PB1SW - PB1 Switch
PB1SW is one of three general purpose switches available
in each loop. It can be utilized for switching Boolean
signals in such applications as: toggling Console/Local
operation of the ODC or ODS function blocks, Start/Stop,
controlling the position of a TSW (Transfer Switch)
function block for switching analog signals, or other
operator initiated actions.
PB1SW can be configured for momentary or sustained
operation. As momentary, the switch will transfer to the
NO position when the button is pressed and will return
when released. Momentary action is used in toggle
applications such as changing the function of the ODC or
ODS function blocks. In the sustained mode, the switch
will alternate positions each time the button is pressed. An
unconfigured NC input defaults to 0 and an unconfigured
NO input to 1. The button can be remotely activated
through a command over Modbus or Modbus/TCP.
This block operates with an operator faceplate that includes green and red LEDs that are turned on using input MD.
A HI (1) input will turn on the Green LED and a LO the Red LED. The default connection will be the PS output of
the block but should be changed as required to display the correct status. The message parameters do not apply to
the current product.
POWER UP - When the switch is configured for
momentary action, it will always power up in the NC
position. For sustained action, with the POWER UP
parameter set to YES, the switch will power up in the
last position during a hot or warm start, and during a
cold start will power up in the NC position. When
the POWER UP parameter is set to NO, the switch
will power up in the last position during a hot start.
During a warm or cold start, it will power up in the
NC position.
R
G
MD
PS
MD Input
P
B
S
witch
Output
Operator Display Interface
MSG
PB1 Switch
MD HI ST
MD HI AC
MD LO ST MD LO AC
PB1
BOD LEDS
Momentary Action
Sustained Action
NO
NC
*****
*****
**********
BLOCK DIAGRAM
BOD - Basic Operator Display
MD - Message Display
X03126S0