diff --git a/frappy_psi/tnmr/OTFModule.py b/frappy_psi/tnmr/OTFModule.py
index 7efcae99..96b43a6e 100644
--- a/frappy_psi/tnmr/OTFModule.py
+++ b/frappy_psi/tnmr/OTFModule.py
@@ -18,6 +18,8 @@ import frappy_psi.tnmr.sequence_generation as seq_gen
 import frappy.core as fc
 import frappy
 
+from frappy.errors import ProgrammingError
+
 import win32com
 import pythoncom
 import numpy as np
@@ -27,6 +29,8 @@ import time
 import os
 import traceback
 
+TNMR_MAX_PULSES = 100
+
 class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
     """An NMR device being driven by an instance of TNMR. Requires that an instance of TNMR is opened before creation.
 
@@ -43,6 +47,8 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
 
         Acquisition Parameters
         ----------------------
+            These parameters can be set from a dictionary, using the update_parameters method/command.
+        
             title: a title which will be embedded to the sequence files. Use this for identification.
             acquisition_time: float (usecs) which describes the length of acquisition
             ringdown_time: float (usecs) which describes the length of ringdown
@@ -51,6 +57,7 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
             acq_phase_cycle: str, the phase cycle to run on acquisition (eg., '0 1 1 2', '0 1 2 3', '1 1 2 2 0 0 3 3 1 2 3 4', ...)
             num_acqs: int (ct), the number of 1D scans to take per sequence
             obs_freq: float (MHz), the NMR frequency
+            
         
     Commands
     --------
@@ -90,7 +97,7 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
     sequence_data = fc.Parameter('sequence_config', fc.ArrayOf(fc.StructOf(pulse_width=fc.FloatRange(unit='usecs'), 
                                                                            pulse_height=fc.FloatRange(unit='%'), 
                                                                            delay_time=fc.FloatRange(unit='usecs'),
-                                                                           phase_cycle=fc.StringType()), minlen=0), default=[{'pulse_width':0,'pulse_height':0,'delay_time':0,'phase_cycle':''}]*100, readonly=False)
+                                                                           phase_cycle=fc.StringType()), minlen=0), default=[{'pulse_width':0,'pulse_height':0,'delay_time':0,'phase_cycle':''}]*TNMR_MAX_PULSES, readonly=False)
     num_acqs_actual = fc.Parameter('num_acqs', fc.IntRange(), readonly=True, default=0)
     
     # final details
@@ -155,6 +162,14 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
         except:
             traceback.print_exc()
             pass
+            
+    @fc.Command(description='Updates any device parameters via a dictionary', argument={'type': 'dict'})
+    def update_parameters(self, dct):
+        for k, v in dct.items():
+            if(hasattr(self, k)):
+                setattr(self, k, v)
+            else:
+                self.logger.info(f'Bad TNMR parameter: {k}')
 
     ### READ/WRITE
     
@@ -246,7 +261,7 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
         seq = []
         seq += t
         print(seq)
-        seq += [{'pulse_width':0,'pulse_height':0,'delay_time':0,'phase_cycle':''}] * (100-self.sequence_length) # because nicos will only send the smallest size it has ever sent...
+        seq += [{'pulse_width':0,'pulse_height':0,'delay_time':0,'phase_cycle':''}] * (TNMR_MAX_PULSES-self.sequence_length) # because nicos will only send the smallest size it has ever sent...
         self.sequence_data = seq
         
         return self.read_sequence_data()
@@ -336,10 +351,10 @@ class ProgrammedSequence(fc.Drivable): # Drivable only for kill() funcitonality
             # then, load the thing into TNMR
             success = self.tnmr().load_sequence(filename)
             if not(success):
-                print('Retrying load sequence')
+                self.logger.info('Retrying load pulse sequence')
                 success = self.tnmr().load_sequence(filename)
                 if not(success):
-                    print('WARNING: Failed!')
+                    self.logger.info('Failed pulse sequence load!')
                     raise Exception()
 
             # load some parameters back to TNMR
diff --git a/frappy_psi/tnmr/code-reference.pdf b/frappy_psi/tnmr/code-reference.pdf
index 2299567b..4127a05e 100644
Binary files a/frappy_psi/tnmr/code-reference.pdf and b/frappy_psi/tnmr/code-reference.pdf differ