diff --git a/sis8300bcmApp/Db/sis8300bcm-fiber.template b/sis8300bcmApp/Db/sis8300bcm-fiber.template
new file mode 100644
index 0000000000000000000000000000000000000000..e9eea329ca04c56c8d2b55114e784bac560b833a
--- /dev/null
+++ b/sis8300bcmApp/Db/sis8300bcm-fiber.template
@@ -0,0 +1,29 @@
+#=================================================================#
+# Template file: sis8300bcm-fibr.template
+# Database for the records specific to the FIBER block of the 
+# individual BCM channel
+# Juliano Murari
+# July 20, 2022
+
+record(longout, "$(P)$(R)OutDataSelect")
+{
+    field(DTYP, "asynInt32")
+    field(OUT,  "@asyn($(PORT),$(ADDR=0),$(TIMEOUT=1))BCM.FIBER.OUT_DATA_SELECT")
+#    field(ASG,  "critical")
+    info(autosaveFields, "VAL")
+}
+
+record(longin, "$(P)$(R)OutDataSelectR")
+{
+    field(DTYP, "asynInt32")
+    field(INP,  "@asyn($(PORT),$(ADDR=0),$(TIMEOUT=1))BCM.FIBER.OUT_DATA_SELECT")
+    field(SCAN, "I/O Intr")
+}
+
+record(longin, "$(P)$(R)StatusR")
+{
+    field(DTYP, "asynInt32")
+    field(INP,  "@asyn($(PORT),$(ADDR=0),$(TIMEOUT=1))BCM.FIBER.STATUS")
+    field(SCAN, "I/O Intr")
+}
+
diff --git a/sis8300bcmApp/src/sis8300bcm.cpp b/sis8300bcmApp/src/sis8300bcm.cpp
index 705aea1b672d31c506dd3e78a85864554d365686..f1afdf674d980a271809a90078b4aae595da7ea7 100644
--- a/sis8300bcmApp/src/sis8300bcm.cpp
+++ b/sis8300bcmApp/src/sis8300bcm.cpp
@@ -315,6 +315,9 @@ sis8300bcm::sis8300bcm(const char *portName, const char *devicePath,
     // PROBE block, channel specific
     createParam(BCMProbeChannelString,                      asynParamInt32,     &BCMProbeChannel);
     createParam(BCMProbeSourceString,                       asynParamInt32,     &BCMProbeSource);
+    // FIBER block, channel specific
+    createParam(BCMFiberOutDataSelectString,                asynParamInt32,     &BCMFiberOutDataSelect);
+    createParam(BCMFiberStatusString,                       asynParamInt32,     &BCMFiberStatus);
     // LUT, channel specific
     char buf[255];
     for (int i = 0; i < BCM_LUT_SIZE; i++) {
@@ -1115,6 +1118,25 @@ int sis8300bcm::readbackParameters()
         setIntegerParam(addr, BCMProbeChannel, uintValue % 10);
     }
 
+    // readback FIBER parameters
+    for (int addr = 0; addr < SIS8300BCM_NUM_FIBER_CHANNELS; addr++) {
+        asynPrintDeviceInfo(pasynUserSelf, "readback FIBER %d parameters", addr);
+
+        ret = sis8300drvbcm_get_fiber_out_data_select(mDeviceHandle, addr, &uintValue);
+        if (ret) {
+            asynPrintError(pasynUserSelf, "sis8300drvbcm_get_fiber_out_data_select returned %d", ret);
+            return ret;
+        }
+        setIntegerParam(addr, BCMFiberOutDataSelect, uintValue);
+        ret = sis8300drvbcm_get_fiber_status(mDeviceHandle, addr, &uintValue);
+        if (ret) {
+            asynPrintError(pasynUserSelf, "sis8300drvbcm_get_fiber_status returned %d", ret);
+            return ret;
+        }
+        setIntegerParam(addr, BCMFiberStatus, uintValue);
+
+    }
+
     callParamCallbacks();
 
     return ret;
@@ -1865,6 +1887,11 @@ asynStatus sis8300bcm::writeInt32(asynUser *pasynUser, epicsInt32 value)
         if (ret) {
             asynPrintError(pasynUserSelf, "sis8300drvbcm_set_channel_trigger_source returned %d", ret);
         }
+    } else if (function == BCMFiberOutDataSelect) {
+        ret = sis8300drvbcm_set_fiber_out_data_select(mDeviceHandle, addr, value);
+        if (ret) {
+            asynPrintError(pasynUserSelf, "sis8300drvbcm_set_fiber_out_data_select returned %d", ret);
+        }
     } else {
         if (function < BCM_FIRST_PARAM) {
             status = sis8300::writeInt32(pasynUser, value);
diff --git a/sis8300bcmApp/src/sis8300bcm.h b/sis8300bcmApp/src/sis8300bcm.h
index 57fc74b830d8d9e0d6b0ecb46732121f2a020bf7..5a50abeb8f9e6bd5db6c9a1e20c5f52a440047d6 100644
--- a/sis8300bcmApp/src/sis8300bcm.h
+++ b/sis8300bcmApp/src/sis8300bcm.h
@@ -211,6 +211,9 @@
 // PROBE block, channel specific
 #define BCMProbeChannelString                        "BCM.PROBE.CHANNEL"
 #define BCMProbeSourceString                         "BCM.PROBE.SOURCE"
+// FIBER block, channel specific
+#define BCMFiberOutDataSelectString                  "BCM.FIBER.OUT_DATA_SELECT"
+#define BCMFiberStatusString                         "BCM.FIBER.STATUS"
 // LUT, board specific, 16 locations
 #define BCMLutDestinationIDString                    "BCM.LUT%d.DEST_ID"
 #define BCMLutMinTriggerPeriodString                 "BCM.LUT%d.MIN_TRIGGER_PERIOD"
@@ -422,6 +425,9 @@ protected:
     // PROBE block, channel specific
     int BCMProbeChannel;
     int BCMProbeSource;
+    // FIBER block, channel specific
+    int BCMFiberOutDataSelect;
+    int BCMFiberStatus;
     // LUT, board specific
     int BCMLutDestinationID[BCM_LUT_SIZE];
     int BCMLutMinTriggerPeriod[BCM_LUT_SIZE];
diff --git a/vendor/ess/lib/sis8300bcm_reg.h b/vendor/ess/lib/sis8300bcm_reg.h
index d3f2dc6b1d41424eb552cb14ddb77a96acc99433..6057addcb6aa0b96ddfbf2eeb3e3066588997ec0 100644
--- a/vendor/ess/lib/sis8300bcm_reg.h
+++ b/vendor/ess/lib/sis8300bcm_reg.h
@@ -184,6 +184,12 @@ extern "C" {
  */
 #define SIS8300BCM_PROB_X_SOURCE_OFF                    0x000
 
+/*
+ FIBER block registers
+ */
+#define SIS8300BCM_FIBR_X_OUT_DATA_SELECT_OFF           0x000
+#define SIS8300BCM_FIBR_X_STATUS_OFF                    0x001
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/vendor/ess/lib/sis8300drvbcm.c b/vendor/ess/lib/sis8300drvbcm.c
index 36cb001a40758626b2cc3140709c1b56a1a0de95..4c438f18cf2f5d503b1594df17dbd2fc20524ef3 100644
--- a/vendor/ess/lib/sis8300drvbcm.c
+++ b/vendor/ess/lib/sis8300drvbcm.c
@@ -2791,3 +2791,47 @@ int sis8300drvbcm_get_channel_beam_above_threshold(sis8300drv_usr *sisuser, unsi
     // printf("%s: channel %d, reg 0x%x, value: %d\n", __func__, channel, reg, value);
     return ret;
 }
+
+// used to control fiber out data select
+int sis8300drvbcm_set_fiber_out_data_select(sis8300drv_usr *sisuser, unsigned int channel, unsigned int selection)
+{
+    unsigned int reg = SIS8300BCM_CHANNEL_BLOCK_BASE + \
+            (SIS8300BCM_CHANNEL_BLOCK_SIZE * channel) + \
+            SIS8300BCM_FIBR_BANK_OFF + \
+            SIS8300BCM_FIBR_X_OUT_DATA_SELECT_OFF;
+    // register has lowest 5 bits defined
+    selection &= 0x1F;
+    int ret = sis8300drv_reg_write(sisuser, reg, selection);
+    return ret;
+}
+
+int sis8300drvbcm_get_fiber_out_data_select(sis8300drv_usr *sisuser, unsigned int channel, unsigned int *selection)
+{
+    unsigned int reg = SIS8300BCM_CHANNEL_BLOCK_BASE + \
+            (SIS8300BCM_CHANNEL_BLOCK_SIZE * channel) + \
+            SIS8300BCM_FIBR_BANK_OFF + \
+            SIS8300BCM_FIBR_X_OUT_DATA_SELECT_OFF;
+    // register has lowest 5 bits defined
+    int ret = sis8300drv_reg_read(sisuser, reg, selection);
+    if (ret) {
+        return ret;
+    }
+    *selection &= 0x1F;
+    return ret;
+}
+
+int sis8300drvbcm_get_fiber_status(sis8300drv_usr *sisuser, unsigned int channel, unsigned int *status)
+{
+    unsigned int reg = SIS8300BCM_CHANNEL_BLOCK_BASE + \
+            (SIS8300BCM_CHANNEL_BLOCK_SIZE * channel) + \
+            SIS8300BCM_FIBR_BANK_OFF + \
+            SIS8300BCM_FIBR_X_STATUS_OFF;
+    // register has lowest 5 bits defined
+    int ret = sis8300drv_reg_read(sisuser, reg, status);
+    if (ret) {
+        return ret;
+    }
+    *status &= 0x1F;
+    return ret;
+}
+
diff --git a/vendor/ess/lib/sis8300drvbcm.h b/vendor/ess/lib/sis8300drvbcm.h
index 48eeafd6d45ca839d115a3ed53ad8fea9db5d0da..33ddbeaa90b33467fcb2f5133e4eda48a122347d 100644
--- a/vendor/ess/lib/sis8300drvbcm.h
+++ b/vendor/ess/lib/sis8300drvbcm.h
@@ -83,6 +83,8 @@ typedef enum {
 #define SIS8300BCM_NUM_PROBE_CHANNELS   4
 #define SIS8300BCM_NUM_CHANNELS         24
 
+#define SIS8300BCM_NUM_FIBER_CHANNELS   2
+
 void sis8300drvbcm_set_sampling_frequency(sis8300drv_usr *sisuser, double frequency);
 void sis8300drvbcm_get_sampling_frequency(sis8300drv_usr *sisuser, double *frequency);
 int sis8300drvbcm_set_beam_trigger_source(sis8300drv_usr *sisuser, unsigned int source);
@@ -290,6 +292,9 @@ int sis8300drvbcm_get_differential_alarm_first(sis8300drv_usr *sisuser, unsigned
 int sis8300drvbcm_get_differential_alarm_direct(sis8300drv_usr *sisuser, unsigned int channel, unsigned int *alarms);
 int sis8300drvbcm_set_enable_calibration_pulse(sis8300drv_usr *sisuser, unsigned int enable_calibration_pulse);
 int sis8300drvbcm_get_calibration_sample(sis8300drv_usr *sisuser, unsigned int channel, unsigned int index, double *sample);
+int sis8300drvbcm_set_fiber_out_data_select(sis8300drv_usr *sisuser, unsigned int channel, unsigned int selection);
+int sis8300drvbcm_get_fiber_out_data_select(sis8300drv_usr *sisuser, unsigned int channel, unsigned int *selection);
+int sis8300drvbcm_get_fiber_status(sis8300drv_usr *sisuser, unsigned int channel, unsigned int *status);
 
 #ifdef __cplusplus
 }